1 files changed, 2 insertions, 2 deletions
diff --git a/string.c b/string.c
index 18c876dcf3..1a6eb07959 100644
--- a/string.c
+++ b/string.c
@@ -1365,11 +1365,11 @@ rb_str_inspect(str)
     while (p < pend) {
 	char c = *p++;
 	if (ismbchar(c) && p < pend) {
-	    int len = mbclen(c)-1;
+	    int len = mbclen(c);
 
 	    CHECK(len);
 	    *b++ = c;
-	    while (len--) {
+	    while (--len) {
 		*b++ = *p++;
 	    }
 	}