--- a/ImageLib/src/CImage.cpp
+++ b/ImageLib/src/CImage.cpp
@@ -32,7 +32,7 @@
   Release();
 
   // Get extensions
-  char *p = strrchr(FileName,'.');
+  const char *p = strrchr(FileName,'.');
   char ext[12];
 
   if( p==NULL ) {