diff --git a/src/hb.hh b/src/hb.hh
index 3dc6ef472..45df81d69 100644
--- a/src/hb.hh
+++ b/src/hb.hh
@@ -117,8 +117,10 @@
 #pragma GCC diagnostic ignored "-Wshadow"			// TODO fix
 #pragma GCC diagnostic ignored "-Wunsafe-loop-optimizations"	// TODO fix
 #pragma GCC diagnostic ignored "-Wunused-parameter"		// TODO fix
+#if defined(__GNUC__) && !defined(__clang__)
 #pragma GCC diagnostic ignored "-Wunused-result"		// TODO fix
 #endif
+#endif
 
 /* Ignored intentionally. */
 #ifndef HB_NO_PRAGMA_GCC_DIAGNOSTIC_IGNORED