diff --git a/smack-core/src/main/java/org/jivesoftware/smack/util/EqualsUtil.java b/smack-core/src/main/java/org/jivesoftware/smack/util/EqualsUtil.java
index 9d786cc8f..8110358a7 100644
--- a/smack-core/src/main/java/org/jivesoftware/smack/util/EqualsUtil.java
+++ b/smack-core/src/main/java/org/jivesoftware/smack/util/EqualsUtil.java
@@ -1,6 +1,6 @@
 /**
  *
- * Copyright 2019 Florian Schmaus.
+ * Copyright 2019-2020 Florian Schmaus.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -34,6 +34,12 @@ public final class EqualsUtil {
             return false;
         }
 
+        int thisHashCode = thisObject.hashCode();
+        int otherHashCode = other.hashCode();
+        if (thisHashCode != otherHashCode) {
+            return false;
+        }
+
         EqualsUtil.Builder equalsBuilder = new EqualsUtil.Builder();
 
         equalsComperator.compare(equalsBuilder, thisObjectClass.cast(other));