diff --git a/CMakeLists.txt b/CMakeLists.txt
index 690351e8b..b404e6916 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -78,6 +78,10 @@ OPTION ( ASSIMP_COVERALLS
   "Enable this to measure test coverage."
   OFF
 )
+OPTION ( ASSIMP_WERRRO
+  "Treat warnings as errors."
+  OFF
+)
 OPTION ( SYSTEM_IRRXML
   "Use system installed Irrlicht/IrrXML library."
   OFF
@@ -212,6 +216,11 @@ if (ASSIMP_COVERALLS)
     SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -g -O0 -fprofile-arcs -ftest-coverage")
 endif()
 
+if (ASSIMP_WERROR)
+    SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Werror")
+    SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Werror")
+endif()
+
 INCLUDE (FindPkgMacros)
 INCLUDE (PrecompiledHeader)
 
diff --git a/code/AssbinExporter.cpp b/code/AssbinExporter.cpp
index 4ea261718..a6fbcd8f7 100644
--- a/code/AssbinExporter.cpp
+++ b/code/AssbinExporter.cpp
@@ -139,6 +139,17 @@ inline size_t Write<aiVector3D>(IOStream * stream, const aiVector3D& v)
     return t;
 }
 
+// -----------------------------------------------------------------------------------
+// Serialize a color value
+template <>
+inline size_t Write<aiColor3D>(IOStream * stream, const aiColor3D& v)
+{
+    size_t t = Write<float>(stream,v.r);
+    t += Write<float>(stream,v.g);
+    t += Write<float>(stream,v.b);
+    return t;
+}
+
 // -----------------------------------------------------------------------------------
 // Serialize a color value
 template <>
@@ -639,9 +650,9 @@ inline size_t WriteArray(IOStream * stream, const T* in, unsigned int size)
                 Write<float>(&chunk,l->mAttenuationQuadratic);
             }
 
-            Write<aiVector3D>(&chunk,(const aiVector3D&)l->mColorDiffuse);
-            Write<aiVector3D>(&chunk,(const aiVector3D&)l->mColorSpecular);
-            Write<aiVector3D>(&chunk,(const aiVector3D&)l->mColorAmbient);
+            Write<aiColor3D>(&chunk,l->mColorDiffuse);
+            Write<aiColor3D>(&chunk,l->mColorSpecular);
+            Write<aiColor3D>(&chunk,l->mColorAmbient);
 
             if (l->mType == aiLightSource_SPOT) {
                 Write<float>(&chunk,l->mAngleInnerCone);
diff --git a/code/DefaultLogger.cpp b/code/DefaultLogger.cpp
index 5a6f19544..b69e18ea9 100644
--- a/code/DefaultLogger.cpp
+++ b/code/DefaultLogger.cpp
@@ -253,8 +253,8 @@ void DefaultLogger::kill()
 //  Debug message
 void DefaultLogger::OnDebug( const char* message )
 {
-    if ( m_Severity == Logger::NORMAL )
-        return;
+	if ( m_Severity == Logger::NORMAL )
+		return;
 
 	static const size_t Size = MAX_LOG_MESSAGE_LENGTH + 16;
 	char msg[Size];
diff --git a/code/FBXParser.cpp b/code/FBXParser.cpp
index cf6930e22..b5661caf8 100644
--- a/code/FBXParser.cpp
+++ b/code/FBXParser.cpp
@@ -281,7 +281,7 @@ uint64_t ParseTokenAsID(const Token& t, const char*& err_out)
     unsigned int length = static_cast<unsigned int>(t.end() - t.begin());
     ai_assert(length > 0);
 
-    const char* out;
+    const char* out = nullptr;
     const uint64_t id = strtoul10_64(t.begin(),&out,&length);
     if (out > t.end()) {
         err_out = "failed to parse ID (text)";
@@ -327,7 +327,7 @@ size_t ParseTokenAsDim(const Token& t, const char*& err_out)
         return 0;
     }
 
-    const char* out;
+    const char* out = nullptr;
     const size_t id = static_cast<size_t>(strtoul10_64(t.begin() + 1,&out,&length));
     if (out > t.end()) {
         err_out = "failed to parse ID";
@@ -440,7 +440,7 @@ int64_t ParseTokenAsInt64(const Token& t, const char*& err_out)
     unsigned int length = static_cast<unsigned int>(t.end() - t.begin());
     ai_assert(length > 0);
 
-    const char* out;
+    const char* out = nullptr;
     const int64_t id = strtol10_64(t.begin(), &out, &length);
     if (out > t.end()) {
         err_out = "failed to parse Int64 (text)";
diff --git a/code/Importer.cpp b/code/Importer.cpp
index eb0119693..379daab02 100644
--- a/code/Importer.cpp
+++ b/code/Importer.cpp
@@ -831,8 +831,8 @@ const aiScene* Importer::ApplyPostProcessing(unsigned int pFlags)
     pimpl->mProgressHandler->UpdatePostProcess( static_cast<int>(pimpl->mPostProcessingSteps.size()), static_cast<int>(pimpl->mPostProcessingSteps.size()) );
 
     // update private scene flags
-  if( pimpl->mScene )
-    ScenePriv(pimpl->mScene)->mPPStepsApplied |= pFlags;
+    if( pimpl->mScene )
+      ScenePriv(pimpl->mScene)->mPPStepsApplied |= pFlags;
 
     // clear any data allocated by post-process steps
     pimpl->mPPShared->Clean();
diff --git a/code/glTFExporter.cpp b/code/glTFExporter.cpp
index 8967a7aa7..7215a98c3 100644
--- a/code/glTFExporter.cpp
+++ b/code/glTFExporter.cpp
@@ -507,7 +507,7 @@ void glTFExporter::ExportMeshes()
 
     // Variables needed for compression. BEGIN.
     // Indices, not pointers - because pointer to buffer is changing while writing to it.
-    size_t idx_srcdata_begin;// Index of buffer before writing mesh data. Also, index of begin of coordinates array in buffer.
+    size_t idx_srcdata_begin = 0; // Index of buffer before writing mesh data. Also, index of begin of coordinates array in buffer.
     size_t idx_srcdata_normal = SIZE_MAX;// Index of begin of normals array in buffer. SIZE_MAX - mean that mesh has no normals.
     std::vector<size_t> idx_srcdata_tc;// Array of indices. Every index point to begin of texture coordinates array in buffer.
     size_t idx_srcdata_ind;// Index of begin of coordinates indices array in buffer.