diff --git a/peg-highlight/pmh_parser.h b/peg-highlight/pmh_parser.h
index d57a1732..78086cab 100644
--- a/peg-highlight/pmh_parser.h
+++ b/peg-highlight/pmh_parser.h
@@ -5,7 +5,9 @@
  * pmh_parser.h
  */
 
+#ifdef Q_CC_GNU
 #pragma GCC diagnostic ignored "-Wunused-parameter"
+#endif
 
 /** \file
 * \brief Parser public interface.