diff --git a/TextureCache.cc b/TextureCache.cc
index 888f9ff..95b4142 100644
--- a/TextureCache.cc
+++ b/TextureCache.cc
@@ -12,9 +12,6 @@ using namespace std;
 //#define DEBUG_GL_ERROR
 #ifdef DEBUG_GL_ERROR
 #define checkGLError() checkGLErrorLine(__FUNCTION__, __LINE__)
-#else
-#define checkGLError()
-#endif
 static void checkGLErrorLine(const char * function, int line)
 {
     GLenum err = glGetError();
@@ -25,6 +22,9 @@ static void checkGLErrorLine(const char * function, int line)
             << dec << line << endl;
     }
 }
+#else
+#define checkGLError()
+#endif
 
 TextureCache::~TextureCache()
 {
@@ -41,9 +41,14 @@ GLuint TextureCache::load(const FileLoader::Path & path,
         return 0;
     map<string,GLuint>::iterator it = m_cache.find(filename);
     if (it != m_cache.end())
+    {
         return it->second;
+    }
     GLuint tex = loadTexture(path, fileLoader, mipmaps, mode, quality);
-    m_cache[filename] = tex;
+    if (tex > 0)
+    {
+        m_cache[filename] = tex;
+    }
     return tex;
 }
 
@@ -121,8 +126,6 @@ GLuint TextureCache::loadTexture(const FileLoader::Path & path,
         checkGLError();
     }
 
-    checkGLError();
-    glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, mode);
     checkGLError();
 
     if (mipmaps)