diff --git a/lib/android.js b/lib/android.js
index fc51b64..a2f404f 100644
--- a/lib/android.js
+++ b/lib/android.js
@@ -555,7 +555,8 @@ function findString (string, moduleName) {
     const size = range.size;
     const result = Memory.scanSync(base, size, pattern);
     if (result.length > 0) return result;
-  }).filter((element => element != null)).flat();
+    return null;
+  }).filter(element => element !== null).flat();
 }
 
 function createAdd (address, register) {
@@ -574,6 +575,7 @@ function findPatternInModule (pattern, moduleName) {
     const size = range.size;
     const result = Memory.scanSync(base, size, pattern);
     if (result.length != 0) return result;
+    return null;
   }).filter(element => element != null).flat();
 }
 
@@ -587,7 +589,7 @@ function findEnsurePlugIn () {
     if (disasm.mnemonic === 'b') {
       return new NativePointer(disasm.operands[0].value);
     }
-  }).filter((element => element != null)).flat();
+  }).filter(element => element !== null).flat();
 }
 
 function findPrologue (address) {
@@ -626,11 +628,13 @@ function tryGetEnvJvmti (vm, runtime) {
     let ensurePluginLoaded;
     if (Module.findExportByName('libart.so', '_ZN3art7Runtime18EnsurePluginLoadedEPKcPNSt3__112basic_stringIcNS3_11char_traitsIcEENS3_9allocatorIcEEEE') === null) {
       // on some devices calling the ensurePluginLoaded make the app really slow so for is commented
+      if (false) {
+       const candidates = findEnsurePlugIn();
+       ensurePluginLoaded = new NativeFunction(candidates[0],
+        'bool',
+        ['pointer', 'pointer', 'pointer']);
+      }
       return;
-      // const candidates = findEnsurePlugIn();
-      // ensurePluginLoaded = new NativeFunction(candidates[0],
-      // 'bool',
-      // ['pointer', 'pointer', 'pointer']);
     } else {
       ensurePluginLoaded = new NativeFunction(Module.getExportByName('libart.so', '_ZN3art7Runtime18EnsurePluginLoadedEPKcPNSt3__112basic_stringIcNS3_11char_traitsIcEENS3_9allocatorIcEEEE'),
         'bool',
@@ -1961,7 +1965,8 @@ function findDoCalls () {
         return findPrologue(possibleBranch);
       }
     }
-  }).filter(element => element!=null).flat();
+    return null;
+  }).filter(element => element !== null).flat();
 }
 
 function instrumentArtMethodInvocationFromInterpreter () {