diff --git a/panda/src/gobj/shaderExpansion.cxx b/panda/src/gobj/shaderExpansion.cxx
index d723604cdd..65f0ab3aaa 100644
--- a/panda/src/gobj/shaderExpansion.cxx
+++ b/panda/src/gobj/shaderExpansion.cxx
@@ -1125,7 +1125,7 @@ cg_compile_for(const ShaderCaps &caps,
 
   return true;
 }
-#endif HAVE_CG
+#endif  // HAVE_CG
 
 ////////////////////////////////////////////////////////////////////
 //  Function: ShaderExpansion::Constructor