diff --git a/src/Makefile.cfg b/src/Makefile.cfg
index 6142e9ecf..c69fcd57d 100644
--- a/src/Makefile.cfg
+++ b/src/Makefile.cfg
@@ -154,6 +154,9 @@ ifdef GCC43
 endif
 endif
  WFLAGS+=-Wsign-compare
+ifdef GCC91
+ WFLAGS+=-Wno-error=address-of-packed-member
+endif
 ifdef GCC45
  WFLAGS+=-Wlogical-op
 endif