diff --git a/.travis.sh b/.travis.sh
index 7161fd28d..2b09da35e 100755
--- a/.travis.sh
+++ b/.travis.sh
@@ -1,6 +1,6 @@
 function generate()
 {
-    cmake -G "Unix Makefiles" -DASSIMP_NO_EXPORT=$TRAVIS_NO_EXPORT -DBUILD_SHARED_LIBS=$SHARED_BUILD -DASSIMP_COVERALLS=$ENABLE_COVERALLS
+    cmake -G "Unix Makefiles" -DASSIMP_NO_EXPORT=$TRAVIS_NO_EXPORT -DBUILD_SHARED_LIBS=$SHARED_BUILD -DASSIMP_COVERALLS=$ENABLE_COVERALLS -DASSIMP_ERROR=ON
 }
 
 if [ $ANDROID ]; then
diff --git a/CMakeLists.txt b/CMakeLists.txt
index b404e6916..8b16c278d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -78,7 +78,7 @@ OPTION ( ASSIMP_COVERALLS
   "Enable this to measure test coverage."
   OFF
 )
-OPTION ( ASSIMP_WERRRO
+OPTION ( ASSIMP_WERROR
   "Treat warnings as errors."
   OFF
 )
diff --git a/contrib/Open3DGC/o3dgcSC3DMCDecoder.inl b/contrib/Open3DGC/o3dgcSC3DMCDecoder.inl
index d36b62f2b..aa6f24b73 100644
--- a/contrib/Open3DGC/o3dgcSC3DMCDecoder.inl
+++ b/contrib/Open3DGC/o3dgcSC3DMCDecoder.inl
@@ -425,7 +425,7 @@ namespace o3dgc
         const AdjacencyInfo & v2T          = m_triangleListDecoder.GetVertexToTriangle();
         const T * const       triangles    = ifs.GetCoordIndex();        
         Vec3<long> p1, p2, p3, n0, nt;
-        long na0, nb0;
+        long na0 = 0, nb0 = 0;
         Real rna0, rnb0, norm0;
         char ni0 = 0, ni1 = 0;
         long a, b, c;
diff --git a/contrib/Open3DGC/o3dgcSC3DMCEncoder.inl b/contrib/Open3DGC/o3dgcSC3DMCEncoder.inl
index b2c438814..2d30b05a2 100644
--- a/contrib/Open3DGC/o3dgcSC3DMCEncoder.inl
+++ b/contrib/Open3DGC/o3dgcSC3DMCEncoder.inl
@@ -762,8 +762,8 @@ namespace o3dgc
         const Real * const originalNormals = ifs.GetNormal();
         Vec3<long> p1, p2, p3, n0, nt;
         Vec3<Real> n1;
-        long na0, nb0;
-        Real rna0, rnb0, na1, nb1, norm0, norm1;
+        long na0 = 0, nb0 = 0;
+        Real rna0, rnb0, na1 = 0, nb1 = 0, norm0, norm1;
         char ni0 = 0, ni1 = 0;
         long a, b, c, v;
         m_predictors.Clear();