diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c
index bd4813bad317e..e6cddbb2305f8 100644
--- a/arch/powerpc/xmon/xmon.c
+++ b/arch/powerpc/xmon/xmon.c
@@ -3543,7 +3543,7 @@ scanhex(unsigned long *vp)
 		}
 	} else if (c == '$') {
 		int i;
-		for (i=0; i<63; i++) {
+		for (i = 0; i < (KSYM_NAME_LEN - 1); i++) {
 			c = inchar();
 			if (isspace(c) || c == '\0') {
 				termch = c;