diff --git a/src/object.c b/src/object.c
index f75421ee..8905db18 100644
--- a/src/object.c
+++ b/src/object.c
@@ -529,9 +529,7 @@ size_t stringObjectLen(robj *o) {
     if (sdsEncodedObject(o)) {
         return sdslen(o->ptr);
     } else {
-        char buf[32];
-
-        return ll2string(buf,32,(long)o->ptr);
+        return sdigits10((long)o->ptr);
     }
 }