diff --git a/examples/CMakeLists.txt b/examples/CMakeLists.txt
index 083e15493c..d1b5f721ae 100644
--- a/examples/CMakeLists.txt
+++ b/examples/CMakeLists.txt
@@ -8,7 +8,7 @@ set(CMAKE_EXPORT_COMPILE_COMMANDS 1)
 #set(CMAKE_VERBOSE_MAKEFILE on)
 
 if(BUILD_GRAPHICAL_EXAMPLES)
-    include(${CMAKE_SOURCE_DIR}/CMake/opengl_config.cmake)
+    include(${PROJECT_SOURCE_DIR}/CMake/opengl_config.cmake)
 else()
     if(ANDROID_NDK_TOOLCHAIN_INCLUDED)
         find_library(log-lib log)
diff --git a/src/gl/CMakeLists.txt b/src/gl/CMakeLists.txt
index c541429c8a..acfae089af 100644
--- a/src/gl/CMakeLists.txt
+++ b/src/gl/CMakeLists.txt
@@ -42,7 +42,7 @@ set(REALSENSE_GL_PUBLIC_HEADERS
 
 set(CMAKECONFIG_GL_INSTALL_DIR "${CMAKE_INSTALL_LIBDIR}/cmake/${LRS_GL_TARGET}")
 
-include(${CMAKE_SOURCE_DIR}/CMake/opengl_config.cmake)
+include(${PROJECT_SOURCE_DIR}/CMake/opengl_config.cmake)
 
 if (${BUILD_SHARED_LIBS} AND ${BUILD_EASYLOGGINGPP})
     list(APPEND REALSENSE_GL_CPP ../../third-party/easyloggingpp/src/easylogging++.cc)
diff --git a/tools/CMakeLists.txt b/tools/CMakeLists.txt
index f82e58b174..b00e8fbddd 100644
--- a/tools/CMakeLists.txt
+++ b/tools/CMakeLists.txt
@@ -24,7 +24,7 @@ endif()
 
 if(BUILD_EXAMPLES)
     if(BUILD_GRAPHICAL_EXAMPLES)
-        include(${CMAKE_SOURCE_DIR}/CMake/opengl_config.cmake)
+        include(${PROJECT_SOURCE_DIR}/CMake/opengl_config.cmake)
         if (NOT BUILD_GLSL_EXTENSIONS)
             MESSAGE(STATUS "BUILD_GRAPHICAL_EXAMPLES explicitely depends on BUILD_GLSL_EXTENSIONS, set it ON")
             SET(BUILD_GLSL_EXTENSIONS ON)
diff --git a/wrappers/csharp/Intel.RealSense/CMakeLists.txt b/wrappers/csharp/Intel.RealSense/CMakeLists.txt
index c23a788f99..7ad9172219 100644
--- a/wrappers/csharp/Intel.RealSense/CMakeLists.txt
+++ b/wrappers/csharp/Intel.RealSense/CMakeLists.txt
@@ -31,7 +31,7 @@ csharp_set_designer_cs_properties(
 
 if(BUILD_UNITY_BINDINGS)
 	string(REPLACE "/" "\\" CMAKE_BINARY_WIN_DIR ${CMAKE_BINARY_DIR})
-	string(REPLACE "/" "\\" CMAKE_SOURCE_WIN_DIR ${CMAKE_SOURCE_DIR})
+	string(REPLACE "/" "\\" CMAKE_SOURCE_WIN_DIR ${PROJECT_SOURCE_DIR})
 	file(MAKE_DIRECTORY ${CMAKE_BINARY_WIN_DIR}/wrappers)
 	if(NOT EXISTS ${CMAKE_BINARY_WIN_DIR}/wrappers/unity)
 		execute_process(COMMAND cmd "/C mklink /D ${CMAKE_BINARY_WIN_DIR}\\wrappers\\unity ${CMAKE_SOURCE_WIN_DIR}\\wrappers\\unity")
diff --git a/wrappers/pcl/pcl-color/CMakeLists.txt b/wrappers/pcl/pcl-color/CMakeLists.txt
index 9faea37631..2948dfe2e3 100644
--- a/wrappers/pcl/pcl-color/CMakeLists.txt
+++ b/wrappers/pcl/pcl-color/CMakeLists.txt
@@ -10,7 +10,7 @@ link_directories(${PCL_LIBRARY_DIRS})
 add_definitions(${PCL_DEFINITIONS})
 target_link_libraries(rs-pcl-color ${DEPENDENCIES} ${PCL_COMMON_LIBRARIES} ${PCL_IO_LIBRARIES})
 if(NOT glfw3_DIR)
-    target_include_directories(rs-pcl-color PUBLIC "${CMAKE_SOURCE_DIR}third-party/glfw/include")
+    target_include_directories(rs-pcl-color PUBLIC "${PROJECT_SOURCE_DIR}third-party/glfw/include")
     target_link_directories(rs-pcl-color PUBLIC "${CMAKE_BINARY_DIR}/third-party/glfw/src/${CMAKE_BUILD_TYPE}")
 endif()
 
diff --git a/wrappers/pcl/pcl/CMakeLists.txt b/wrappers/pcl/pcl/CMakeLists.txt
index 80af1cfd16..62e862220f 100644
--- a/wrappers/pcl/pcl/CMakeLists.txt
+++ b/wrappers/pcl/pcl/CMakeLists.txt
@@ -6,7 +6,7 @@ add_executable(rs-pcl rs-pcl.cpp)
 set_property(TARGET rs-pcl PROPERTY CXX_STANDARD 11)
 target_link_libraries(rs-pcl ${DEPENDENCIES})
 if(NOT glfw3_DIR)
-    target_include_directories(rs-pcl PUBLIC "${CMAKE_SOURCE_DIR}/third-party/glfw/include")
+    target_include_directories(rs-pcl PUBLIC "${PROJECT_SOURCE_DIR}/third-party/glfw/include")
     target_link_directories(rs-pcl PUBLIC "${CMAKE_BINARY_DIR}/third-party/glfw/src/${CMAKE_BUILD_TYPE}")
 endif()
 set_target_properties (rs-pcl PROPERTIES
diff --git a/wrappers/python/CMakeLists.txt b/wrappers/python/CMakeLists.txt
index a14bf47545..eae4016c2d 100644
--- a/wrappers/python/CMakeLists.txt
+++ b/wrappers/python/CMakeLists.txt
@@ -140,11 +140,11 @@ set_target_properties( pybackend2
     PROPERTIES
         FOLDER Library/Python
     )
-target_include_directories(pybackend2 PRIVATE ${CMAKE_SOURCE_DIR}/include)
+target_include_directories(pybackend2 PRIVATE ${PROJECT_SOURCE_DIR}/include)
 
 if(${FORCE_RSUSB_BACKEND})
 if(APPLE)
-    target_include_directories(pybackend2 PRIVATE ${CMAKE_SOURCE_DIR}/third-party/hidapi/)
+    target_include_directories(pybackend2 PRIVATE ${PROJECT_SOURCE_DIR}/third-party/hidapi/)
 endif()
 endif()