diff --git a/src/audio.c b/src/audio.c
index 40c24895..5963c11b 100644
--- a/src/audio.c
+++ b/src/audio.c
@@ -865,7 +865,6 @@ static Wave LoadOGG(char *fileName)
 
     TraceLog(DEBUG, "[%s] Total samples calculated: %i", fileName, totalSamples);
 
-    //short *data
     wave.data = malloc(sizeof(short)*totalSamplesLength);
 
     int samplesObtained = stb_vorbis_get_samples_short_interleaved(oggFile, info.channels, wave.data, totalSamplesLength);
diff --git a/src/core.c b/src/core.c
index 26b1dd6d..574de334 100644
--- a/src/core.c
+++ b/src/core.c
@@ -261,7 +261,7 @@ static void CommandCallback(struct android_app *app, int32_t cmd);           //
 // Initialize Window and Graphics Context (OpenGL)
 void InitWindow(int width, int height, const char *title)
 {
-    TraceLog(INFO, "Initializing raylib...");
+    TraceLog(INFO, "Initializing raylib (v1.2.2)");
     
     // Store window title (could be useful...)
     windowTitle = title;
@@ -300,7 +300,7 @@ void InitWindow(int width, int height, const char *title)
 // Android activity initialization
 void InitWindow(int width, int height, struct android_app *state)
 {
-    TraceLog(INFO, "Initializing raylib...");
+    TraceLog(INFO, "Initializing raylib (v1.2.2)");
     
     app_dummy();
 
diff --git a/src/models.c b/src/models.c
index f61f79f5..bb172203 100644
--- a/src/models.c
+++ b/src/models.c
@@ -686,10 +686,13 @@ Model LoadModel(const char *fileName)
     Model model = rlglLoadModel(vData);     // Upload vertex data to GPU
 
     // Now that vertex data is uploaded to GPU, we can free arrays
-    // NOTE: Despite vertex data is useless on OpenGL 3.3 or ES2, we will keep it...
-    //free(vData.vertices);
-    //free(vData.texcoords);
-    //free(vData.normals);
+    // NOTE: We don't need CPU vertex data on OpenGL 3.3 or ES2
+    if (rlGetVersion() != OPENGL_11)
+    {
+        free(vData.vertices);
+        free(vData.texcoords);
+        free(vData.normals);
+    }
 
     return model;
 }
@@ -803,10 +806,13 @@ Model LoadHeightmap(Image heightmap, float maxHeight)
     Model model = rlglLoadModel(vData);
 
     // Now that vertex data is uploaded to GPU, we can free arrays
-    // NOTE: Despite vertex data is useless on OpenGL 3.3 or ES2, we will keep it...
-    //free(vData.vertices);
-    //free(vData.texcoords);
-    //free(vData.normals);
+    // NOTE: We don't need CPU vertex data on OpenGL 3.3 or ES2
+    if (rlGetVersion() != OPENGL_11)
+    {
+        free(vData.vertices);
+        free(vData.texcoords);
+        free(vData.normals);
+    }
 
     return model;
 }
@@ -1118,10 +1124,13 @@ Model LoadCubicmap(Image cubesmap)
     Model model = rlglLoadModel(vData);
 
     // Now that vertex data is uploaded to GPU, we can free arrays
-    // NOTE: Despite vertex data is useless on OpenGL 3.3 or ES2, we will keep it...
-    //free(vData.vertices);
-    //free(vData.texcoords);
-    //free(vData.normals);
+    // NOTE: We don't need CPU vertex data on OpenGL 3.3 or ES2
+    if (rlGetVersion() != OPENGL_11)
+    {
+        free(vData.vertices);
+        free(vData.texcoords);
+        free(vData.normals);
+    }
 
     return model;
 }
@@ -1129,10 +1138,13 @@ Model LoadCubicmap(Image cubesmap)
 // Unload 3d model from memory
 void UnloadModel(Model model)
 {
-    free(model.mesh.vertices);
-    free(model.mesh.texcoords);
-    free(model.mesh.normals);
-
+    if (rlGetVersion() == OPENGL_11)
+    {
+        free(model.mesh.vertices);
+        free(model.mesh.texcoords);
+        free(model.mesh.normals);
+    }
+    
     rlDeleteBuffers(model.vboId[0]);
     rlDeleteBuffers(model.vboId[1]);
     rlDeleteBuffers(model.vboId[2]);
diff --git a/src/raylib.h b/src/raylib.h
index 69966069..14590d04 100644
--- a/src/raylib.h
+++ b/src/raylib.h
@@ -312,7 +312,6 @@ void SetExitKey(int key);                                   // Set a custom key
 #endif
 int GetScreenWidth(void);                                   // Get current screen width
 int GetScreenHeight(void);                                  // Get current screen height
-int GetKeyPressed(void);                                    // Get latest key pressed
 
 void ClearBackground(Color color);                          // Sets Background Color
 void BeginDrawing(void);                                    // Setup drawing canvas to start drawing
@@ -342,6 +341,7 @@ bool IsKeyPressed(int key);                             // Detect if a key has b
 bool IsKeyDown(int key);                                // Detect if a key is being pressed
 bool IsKeyReleased(int key);                            // Detect if a key has been released once
 bool IsKeyUp(int key);                                  // Detect if a key is NOT being pressed
+int GetKeyPressed(void);                                // Get latest key pressed
 
 bool IsMouseButtonPressed(int button);                  // Detect if a mouse button has been pressed once
 bool IsMouseButtonDown(int button);                     // Detect if a mouse button is being pressed
diff --git a/src/rlgl.c b/src/rlgl.c
index 50ef1efd..2b3dfc5f 100644
--- a/src/rlgl.c
+++ b/src/rlgl.c
@@ -1682,7 +1682,7 @@ static GLuint LoadSimpleShader(void)
     char fShaderStr[] = " #version 110      \n"     // NOTE: Equivalent to version 100 on ES2
 #elif defined(GRAPHICS_API_OPENGL_ES2)
     char fShaderStr[] = " #version 100      \n"     // NOTE: Must be defined this way! 110 doesn't work!
-        "precision mediump float;           \n"     // WebGL, required for emscripten
+        "precision mediump float;           \n"     // precision required for OpenGL ES2 (WebGL)
 #endif
         "uniform sampler2D texture0;        \n"
         "varying vec2 fragTexCoord;         \n"
diff --git a/src/utils.c b/src/utils.c
index c3c20b47..dd08f5f8 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -79,7 +79,7 @@ unsigned char *DecompressData(const unsigned char *data, unsigned long compSize,
     pUncomp = (mz_uint8 *)malloc((size_t)uncompSize);
 
     // Check correct memory allocation
-    if (!pUncomp)
+    if (pUncomp == NULL)
     {
         TraceLog(WARNING, "Out of memory while decompressing data");
     }