diff --git a/src/OpenMesh/Core/IO/reader/OBJReader.cc b/src/OpenMesh/Core/IO/reader/OBJReader.cc
index 53ec48cc..4128b231 100644
--- a/src/OpenMesh/Core/IO/reader/OBJReader.cc
+++ b/src/OpenMesh/Core/IO/reader/OBJReader.cc
@@ -446,8 +446,8 @@ read(std::istream& _in, BaseImporter& _bi, Options& _opt)
   int nCurrentPositions = 0,
       nCurrentTexcoords = 0,
       nCurrentNormals   = 0;
-      
-  // pass 2: read vertices
+  
+  // pass 2: read faces
   while( _in && !_in.eof() )
   {
     std::getline(_in,line);
@@ -616,8 +616,14 @@ read(std::istream& _in, BaseImporter& _bi, Options& _opt)
               // Obj counts from 1 and not zero .. array counts from zero therefore -1
               vhandles.push_back(VertexHandle(value-1));
               faceVertices.push_back(VertexHandle(value-1));
-              if (fileOptions.vertex_has_color() )
-                _bi.set_color(vhandles.back(), colors[value-1]);
+              if (fileOptions.vertex_has_color()) {
+                if ((unsigned int)(value - 1) < colors.size()) {
+                  _bi.set_color(vhandles.back(), colors[value - 1]);
+                }
+                else {
+                  omerr() << "Error setting vertex color" << std::endl;
+                }
+              }                  
               break;
 	      
             case 1: // texture coord
@@ -667,9 +673,13 @@ read(std::istream& _in, BaseImporter& _bi, Options& _opt)
 
               // Obj counts from 1 and not zero .. array counts from zero therefore -1
               if (fileOptions.vertex_has_normal() ) {
-                assert(!vhandles.empty());
-                assert((unsigned int)(value-1) < normals.size());
-                _bi.set_normal(vhandles.back(), normals[value-1]);
+                assert(!vhandles.empty());                
+                if ((unsigned int)(value - 1) < normals.size()) {
+                    _bi.set_normal(vhandles.back(), normals[value - 1]);
+                }
+                else {
+                    omerr() << "Error setting vertex normal" << std::endl;
+                }                
               }
               break;
           }