diff --git a/gcc/config/m68k/xm-mot3300.h b/gcc/config/m68k/xm-mot3300.h
index aa3397f77a5..5efeacb94c8 100644
--- a/gcc/config/m68k/xm-mot3300.h
+++ b/gcc/config/m68k/xm-mot3300.h
@@ -8,3 +8,5 @@
 
 #define rindex strrchr
 #define index strchr
+
+#define NO_SYS_SIGLIST