diff --git a/lang/m2/libm2/Arguments.c b/lang/m2/libm2/Arguments.c
index 4812147a9..277730390 100644
--- a/lang/m2/libm2/Arguments.c
+++ b/lang/m2/libm2/Arguments.c
@@ -30,7 +30,7 @@ scopy(src, dst, max)
 {
 	register unsigned int i = 0;
 
-	while (*src && i < max) {
+	while (*src && i <= max) {
 		i++;
 		*dst++ = *src++;
 	}