diff --git a/IBM360/ibm360_sys.c b/IBM360/ibm360_sys.c
index 81da83e..ddce562 100644
--- a/IBM360/ibm360_sys.c
+++ b/IBM360/ibm360_sys.c
@@ -112,7 +112,7 @@ DEBTAB              crd_debug[] = {
 };
 
 
-const char *sim_stop_messages[] = {
+const char *sim_stop_messages[SCPE_BASE] = {
     "Unknown error",
     "Uninterruptable wait",
     "Breakpoint"