diff --git a/.clang-tidy b/.clang-tidy
index e5c1ab54..5de3ff80 100644
--- a/.clang-tidy
+++ b/.clang-tidy
@@ -75,8 +75,7 @@ Checks: >
   readability-simplify-subscript-expr,
   readability-string-compare,
   readability-use-std-min-max
-WarningsAsErrors: "*"
-HeaderFilterRegex: 'include/*'
+HeaderFilterRegex: 'ontologenius/include/ontologenius/*'
 CheckOptions:
   - { key: readability-identifier-naming.NamespaceCase,         value: lower_case }
   - { key: readability-identifier-naming.ClassCase,             value: CamelCase }
diff --git a/include/ontologenius/core/ontoGraphs/Graphs/Graph.h b/include/ontologenius/core/ontoGraphs/Graphs/Graph.h
index 12223f6c..0dc68642 100644
--- a/include/ontologenius/core/ontoGraphs/Graphs/Graph.h
+++ b/include/ontologenius/core/ontoGraphs/Graphs/Graph.h
@@ -318,7 +318,7 @@ namespace ontologenius {
   template<typename B>
   B* Graph<B>::newDefaultBranch(const std::string& name)
   {
-    auto branch = new B(name);
+    auto* branch = new B(name);
     all_branchs_.push_back(branch);
     container_.insert(branch);
     return branch;
@@ -344,7 +344,7 @@ namespace ontologenius {
   index_t Graph<B>::getIndex(const std::string& name)
   {
     std::shared_lock<std::shared_timed_mutex> lock(mutex_);
-    auto branch = container_.find(name);
+    auto* branch = container_.find(name);
     if(branch != nullptr)
       return branch->get();
     else
@@ -442,7 +442,7 @@ namespace ontologenius {
     {
       if(branch->dictionary_.spoken_.find(language_) != branch->dictionary_.spoken_.end())
       {
-        if(branch->dictionary_.spoken_[language_].size())
+        if(branch->dictionary_.spoken_[language_].empty() == false)
         {
           std::unordered_set<size_t> tested;
           std::random_device rd;
diff --git a/src/graphical/ontoloGUI/DarkStyle.cpp b/src/graphical/ontoloGUI/DarkStyle.cpp
index 91976a37..c59eeff1 100644
--- a/src/graphical/ontoloGUI/DarkStyle.cpp
+++ b/src/graphical/ontoloGUI/DarkStyle.cpp
@@ -35,7 +35,7 @@ DarkStyle::DarkStyle(QStyle* style) : QProxyStyle(style)
 
 QStyle* DarkStyle::styleBase(QStyle* style) const
 {
-  static QStyle* base_ = (style == nullptr) ? QStyleFactory::create(QStringLiteral("Fusion")) : style;
+  static QStyle* base_ = (style == nullptr) ? QStyleFactory::create(QStringLiteral("Fusion")) : style; // NOLINT
   return base_;
 }
 
@@ -81,7 +81,7 @@ void DarkStyle::polish(QApplication* app)
   QApplication::setFont(default_font);
 
   // loadstylesheet
-  QFile qf_darkstyle(QStringLiteral(":/darkstyle/darkstyle.qss"));
+  QFile qf_darkstyle(QStringLiteral(":/darkstyle/darkstyle.qss")); // NOLINT
   if(qf_darkstyle.open(QIODevice::ReadOnly | QIODevice::Text))
   {
     // set stylesheet
diff --git a/src/tests/CI/library.cpp b/src/tests/CI/library.cpp
index ef87f7a8..9684ae29 100644
--- a/src/tests/CI/library.cpp
+++ b/src/tests/CI/library.cpp
@@ -9,21 +9,18 @@ onto::OntologyManipulator* onto_ptr;
 
 TEST(library_tests, close_call)
 {
-  bool res_bool;
-
-  res_bool = onto_ptr->close();
+  bool res_bool = onto_ptr->close();
   EXPECT_TRUE(res_bool);
 }
 
 TEST(library_tests, individuals_call)
 {
-  std::vector<std::string> res;
   std::string test_word = "test";
   bool res_bool = true;
 
   for(size_t i = 0; i < 10; i++)
   {
-    res = onto_ptr->individuals.getUp(test_word);
+    std::vector<std::string> res = onto_ptr->individuals.getUp(test_word);
     res_bool = res_bool && ((res.size() != 1) || (res[0] != "ERR:SERVICE_FAIL"));
   }
 
@@ -32,13 +29,12 @@ TEST(library_tests, individuals_call)
 
 TEST(library_tests, objectProperties_call)
 {
-  std::vector<std::string> res;
   std::string test_word = "test";
   bool res_bool = true;
 
   for(size_t i = 0; i < 10; i++)
   {
-    res = onto_ptr->objectProperties.getUp(test_word);
+    std::vector<std::string> res = onto_ptr->objectProperties.getUp(test_word);
     res_bool = res_bool && ((res.size() != 1) || (res[0] != "ERR:SERVICE_FAIL"));
   }
 
@@ -47,13 +43,12 @@ TEST(library_tests, objectProperties_call)
 
 TEST(library_tests, dataProperties_call)
 {
-  std::vector<std::string> res;
   std::string test_word = "test";
   bool res_bool = true;
 
   for(size_t i = 0; i < 10; i++)
   {
-    res = onto_ptr->dataProperties.getUp(test_word);
+    std::vector<std::string> res = onto_ptr->dataProperties.getUp(test_word);
     res_bool = res_bool && ((res.size() != 1) || (res[0] != "ERR:SERVICE_FAIL"));
   }
 
diff --git a/src/tests/Performances/container_test.cpp b/src/tests/Performances/container_test.cpp
index 844a71f2..c3b44f9e 100644
--- a/src/tests/Performances/container_test.cpp
+++ b/src/tests/Performances/container_test.cpp
@@ -3,6 +3,7 @@
 #include <cstdio>
 #include <cstdlib> /* srand, rand */
 #include <ctime>   /* time */
+#include <iostream>
 #include <ros/ros.h>
 #include <string>
 #include <vector>
@@ -167,7 +168,7 @@ int main(int argc, char** argv)
     container_dyn.load(part_of_words);
     container_map.load(part_of_words);
 
-    for(float j = 0.1; j <= 2; j = j + 0.1)
+    for(float j = 0.1f; j <= 2; j = j + 0.1f)
     {
       std::vector<ontologenius::ValuedNode*> vect = creatTestVector(j, part_of_words);
       double time_span_dyn = findAllNTime(&container_dyn, vect, nb);
diff --git a/src/tests/Performances/deepcopy.cpp b/src/tests/Performances/deepcopy.cpp
index f5f27c9a..3b949ac9 100644
--- a/src/tests/Performances/deepcopy.cpp
+++ b/src/tests/Performances/deepcopy.cpp
@@ -3,8 +3,10 @@
 #include <ctime>   /* time */
 #include <iostream>
 #include <ros/ros.h>
+#include <string>
 
 #include "ontologenius/API/ontologenius/OntologiesManipulator.h"
+#include "ontologenius/API/ontologenius/OntologyManipulator.h"
 
 using namespace std::chrono;
 
diff --git a/src/tests/Performances/getNameVsFind.cpp b/src/tests/Performances/getNameVsFind.cpp
index 3994be72..04865c87 100644
--- a/src/tests/Performances/getNameVsFind.cpp
+++ b/src/tests/Performances/getNameVsFind.cpp
@@ -4,7 +4,9 @@
 #include <cstdio>
 #include <cstdlib> /* srand, rand */
 #include <ctime>
+#include <iostream>
 #include <ros/ros.h>
+#include <string>
 #include <thread>
 #include <unordered_set>
 
diff --git a/src/tests/Performances/tester.cpp b/src/tests/Performances/tester.cpp
index 38f699b9..9301549a 100644
--- a/src/tests/Performances/tester.cpp
+++ b/src/tests/Performances/tester.cpp
@@ -1,14 +1,15 @@
 #include <chrono>
 #include <cstdlib> /* srand, rand */
 #include <ctime>   /* time */
+#include <iostream>
 #include <ros/ros.h>
 #include <string>
 #include <unordered_set>
 #include <vector>
 
+#include "ontologenius/core/ontoGraphs/Branchs/ClassBranch.h"
 #include "ontologenius/core/ontoGraphs/Ontology.h"
 #include "ontologenius/core/reasoner/Reasoners.h"
-#include "ontologenius/core/ontoGraphs/Branchs/ClassBranch.h"
 
 using namespace std::chrono;
 
@@ -20,56 +21,56 @@ std::string set2string(const std::unordered_set<std::string>& word_set)
   return result;
 }
 
-std::vector<std::string> generate_sequence(ontologenius::ClassGraph& onto)
+std::vector<std::string> generateSequence(ontologenius::ClassGraph& onto)
 {
   srand(time(nullptr));
 
   std::vector<ontologenius::ClassBranch*> base = onto.get();
   size_t max_index = base.size();
 
-  std::string _1_10_1 = base[rand() % max_index]->value();
-  std::string _1_10_2 = base[rand() % max_index]->value();
+  std::string seq_1_10_1 = base[rand() % max_index]->value();
+  std::string seq_1_10_2 = base[rand() % max_index]->value();
 
-  std::string _1_20_1 = base[rand() % max_index]->value();
-  std::string _1_20_2 = base[rand() % max_index]->value();
+  std::string seq_1_20_1 = base[rand() % max_index]->value();
+  std::string seq_1_20_2 = base[rand() % max_index]->value();
 
-  std::string _1_25_1 = base[rand() % max_index]->value();
-  std::string _1_25_2 = base[rand() % max_index]->value();
-  std::string _1_25_3 = base[rand() % max_index]->value();
+  std::string seq_1_25_1 = base[rand() % max_index]->value();
+  std::string seq_1_25_2 = base[rand() % max_index]->value();
+  std::string seq_1_25_3 = base[rand() % max_index]->value();
 
-  std::string _1_50_1 = base[rand() % max_index]->value();
-  std::string _1_50_2 = base[rand() % max_index]->value();
-  std::string _1_50_3 = base[rand() % max_index]->value();
-  std::string _1_50_4 = base[rand() % max_index]->value();
-  std::string _1_50_5 = base[rand() % max_index]->value();
+  std::string seq_1_50_1 = base[rand() % max_index]->value();
+  std::string seq_1_50_2 = base[rand() % max_index]->value();
+  std::string seq_1_50_3 = base[rand() % max_index]->value();
+  std::string seq_1_50_4 = base[rand() % max_index]->value();
+  std::string seq_1_50_5 = base[rand() % max_index]->value();
 
   std::vector<std::string> vect20;
   vect20.resize(10);
-  vect20[0] = _1_10_1;
-  vect20[1] = _1_10_2;
+  vect20[0] = seq_1_10_1;
+  vect20[1] = seq_1_10_2;
   vect20.insert(vect20.end(), vect20.begin(), vect20.end()); // 20
-  vect20[2] = _1_20_1;
-  vect20[12] = _1_20_2;
+  vect20[2] = seq_1_20_1;
+  vect20[12] = seq_1_20_2;
   std::vector<std::string> vect100 = vect20;
   vect100.insert(vect100.end(), vect20.begin(), vect20.end()); // 40
   vect100.insert(vect100.end(), vect20.begin(), vect20.end()); // 60
   vect100.insert(vect100.end(), vect20.begin(), vect20.end()); // 80
   vect100.insert(vect100.end(), vect20.begin(), vect20.end()); // 100
   for(int i = 3; i < 100; i += 25)
-    vect100[i] = _1_25_1;
+    vect100[i] = seq_1_25_1;
   for(int i = 13; i < 100; i += 25)
-    vect100[i] = _1_25_2;
+    vect100[i] = seq_1_25_2;
   for(int i = 23; i < 100; i += 25)
-    vect100[i] = _1_25_3;
+    vect100[i] = seq_1_25_3;
 
   for(int i = 33; i < 100; i += 50)
-    vect100[i] = _1_50_1;
+    vect100[i] = seq_1_50_1;
   for(int i = 43; i < 100; i += 50)
-    vect100[i] = _1_50_2;
+    vect100[i] = seq_1_50_2;
   for(int i = 4; i < 100; i += 50)
-    vect100[i] = _1_50_3;
+    vect100[i] = seq_1_50_3;
   for(int i = 14; i < 100; i += 50)
-    vect100[i] = _1_50_4;
+    vect100[i] = seq_1_50_4;
 
   vect100[24] = base[rand() % max_index]->value();
   vect100[34] = base[rand() % max_index]->value();
@@ -78,9 +79,9 @@ std::vector<std::string> generate_sequence(ontologenius::ClassGraph& onto)
   for(int i = 0; i < 100; i++)
     vect10000.insert(vect10000.end(), vect100.begin(), vect100.end());
 
-  for(size_t i = 0; i < vect10000.size(); i++)
-    if(vect10000[i].empty())
-      vect10000[i] = base[rand() % max_index]->value();
+  for(auto& vect : vect10000)
+    if(vect.empty())
+      vect = base[rand() % max_index]->value();
 
   return vect10000;
 }
@@ -89,7 +90,7 @@ double testOne(const std::vector<std::string>& seq, ontologenius::Ontology& onto
 {
   high_resolution_clock::time_point t1 = high_resolution_clock::now();
 
-  for(auto& s : seq)
+  for(const auto& s : seq)
     std::unordered_set<std::string> out = onto.class_graph_.getUp(s);
 
   high_resolution_clock::time_point t2 = high_resolution_clock::now();
@@ -138,7 +139,7 @@ int main(int argc, char** argv)
 
   /*int epoch = 10000;
 
-  std::vector<std::string> seq = generate_sequence(onto.class_graph_);
+  std::vector<std::string> seq = generateSequence(onto.class_graph_);
   double total = 0;
   for(int i = 0; i < epoch; i++)
   {
diff --git a/src/tests/sparql.cpp b/src/tests/sparql.cpp
index d667b734..cdcb17c9 100644
--- a/src/tests/sparql.cpp
+++ b/src/tests/sparql.cpp
@@ -5,6 +5,7 @@
 #include <csignal>
 #include <cstdio>
 #include <cstdlib>
+#include <ctime>
 #include <execinfo.h>
 #include <iostream>
 #include <string>
@@ -17,16 +18,13 @@
 #include "ontologenius/core/ontoGraphs/Ontology.h"
 #include "ontologenius/core/ontologyOperators/SparqlSolver.h"
 #include "ontologenius/interface/RosInterface.h"
-#include "time.h"
 
 using namespace std::chrono;
 
 void handler(int sig)
 {
   std::array<void*, 10> array;
-  size_t size;
-
-  size = backtrace(array.data(), 10);
+  size_t size = backtrace(array.data(), 10);
 
   fprintf(stderr, "Error: signal %d:\n", sig);
   backtrace_symbols_fd(array.data(), size, STDERR_FILENO);
@@ -65,7 +63,7 @@ void compareSolutions(const std::vector<std::map<std::string, std::string>>& sol
       nb_diff++;
   }
 
-  if(nb_diff)
+  if(nb_diff != 0)
     std::cout << "[ERROR] " << nb_diff << " solutions where not identicals" << std::endl;
   else
     std::cout << "[SUCCESS]" << std::endl;