diff --git a/include/osg/GLExtensions b/include/osg/GLExtensions
index 342da8753..95f28b0fd 100644
--- a/include/osg/GLExtensions
+++ b/include/osg/GLExtensions
@@ -45,8 +45,11 @@ extern SG_EXPORT bool isGLExtensionSupported(const char *extension);
 inline void* getGLExtensionFuncPtr(const char *funcName)
 {
 #if defined(WIN32)
+
     return (void*)wglGetProcAddress(funcName);
+
 #elif defined(__DARWIN_OSX__)
+
     std::string temp( "_" );
     temp += funcName;	// Mac OS X prepends an underscore on function names
     if ( NSIsSymbolNameDefined( temp.c_str() ) )
@@ -55,8 +58,16 @@ inline void* getGLExtensionFuncPtr(const char *funcName)
         return NSAddressOfSymbol( symbol );
     } else
 	return NULL;
+
+#elif defined (__sun)
+
+     static void *handle = dlopen((const char *)0L, RTLD_LAZY);
+     return dlsym(handle, funcName);
+
 #else // all other unixes
+
     return dlsym(0, funcName);
+
 #endif
 }