diff --git a/broker/src/main/java/io/moquette/spi/impl/Qos1PublishHandler.java b/broker/src/main/java/io/moquette/spi/impl/Qos1PublishHandler.java
index 75aeccfd..2ee2def6 100755
--- a/broker/src/main/java/io/moquette/spi/impl/Qos1PublishHandler.java
+++ b/broker/src/main/java/io/moquette/spi/impl/Qos1PublishHandler.java
@@ -148,7 +148,7 @@ public class Qos1PublishHandler extends QosPublishHandler {
 
 	void imHandler(String clientID, String fromUser, String topic, byte[] payloadContent, IMCallback callback, boolean isAdmin, boolean isRobotOrChannel) {
         LOG.info("imHandler fromUser={}, topic={}", fromUser, topic);
-        if(!mLimitCounter.isGranted(clientID + fromUser + topic)) {
+        if(!isAdmin && !isRobotOrChannel && !mLimitCounter.isGranted(clientID + fromUser + topic)) {
             ByteBuf ackPayload = Unpooled.buffer();
             ackPayload.ensureWritable(1).writeByte(ERROR_CODE_OVER_FREQUENCY.getCode());
             try {