diff --git a/src/main/java/org/redisson/RedissonScoredSortedSet.java b/src/main/java/org/redisson/RedissonScoredSortedSet.java
index 22500ded8..43edf86bd 100644
--- a/src/main/java/org/redisson/RedissonScoredSortedSet.java
+++ b/src/main/java/org/redisson/RedissonScoredSortedSet.java
@@ -353,7 +353,7 @@ public class RedissonScoredSortedSet<V> extends RedissonExpirable implements RSc
         return commandExecutor.evalWriteAsync(getName(), codec, RedisCommands.EVAL_BOOLEAN,
                 "redis.call('zadd', KEYS[2], unpack(ARGV)); "
                  + "local prevSize = redis.call('zcard', KEYS[1]); "
-                 + "local size = redis.call('zinterstore', KEYS[1], #ARGV/2, KEYS[1], KEYS[2], 'aggregate', 'sum');"
+                 + "local size = redis.call('zinterstore', KEYS[1], 2, KEYS[1], KEYS[2], 'aggregate', 'sum');"
                  + "redis.call('del', KEYS[2]); "
                  + "return size ~= prevSize and 1 or 0; ",
              Arrays.<Object>asList(getName(), "redisson_temp__{" + getName() + "}"), params.toArray());