diff --git a/core/src/main/java/org/jboss/jandex/TypeVariable.java b/core/src/main/java/org/jboss/jandex/TypeVariable.java
index 0ce38f0b..969688f4 100644
--- a/core/src/main/java/org/jboss/jandex/TypeVariable.java
+++ b/core/src/main/java/org/jboss/jandex/TypeVariable.java
@@ -174,6 +174,8 @@ public int hashCode() {
         hash = super.hashCode();
         hash = 31 * hash + name.hashCode();
         hash = 31 * hash + Arrays.hashCode(bounds);
-        return this.hash |= (hash & HASH_MASK);
+        hash &= HASH_MASK;
+        this.hash |= hash;
+        return hash;
     }
 }