1 files changed, 1 insertions, 1 deletions
diff --git a/string.c b/string.c
index d6f09b0bf7..88c5bf4706 100644
--- a/string.c
+++ b/string.c
@@ -1893,7 +1893,7 @@ rb_str_splice(VALUE str, long beg, long len, VALUE val)
 	}
 	beg += slen;
     }
-    if (slen < beg + len) {
+    if (slen < len || slen < beg + len) {
 	len = slen - beg;
     }
     p = str_nth(RSTRING_PTR(str), RSTRING_END(str), beg, enc);