diff --git a/src/smooth/ftgrays.c b/src/smooth/ftgrays.c
index e735f3ed1..597834350 100644
--- a/src/smooth/ftgrays.c
+++ b/src/smooth/ftgrays.c
@@ -353,7 +353,7 @@ typedef ptrdiff_t  FT_PtrDist;
     }                                                              \
   FT_END_STMNT
 
-#ifdef  __arm__
+#if defined( __GNUC__ ) && __GNUC__ < 7 && defined( __arm__ )
   /* Work around a bug specific to GCC which make the compiler fail to */
   /* optimize a division and modulo operation on the same parameters   */
   /* into a single call to `__aeabi_idivmod'.  See                     */