diff --git a/port/jassimp/jassimp/src/jassimp/AiMesh.java b/port/jassimp/jassimp/src/jassimp/AiMesh.java
index eb2ff3c5c..0c700a27e 100644
--- a/port/jassimp/jassimp/src/jassimp/AiMesh.java
+++ b/port/jassimp/jassimp/src/jassimp/AiMesh.java
@@ -314,7 +314,7 @@ public final class AiMesh {
      * @return true if tangents and bitangents are available
      */
     public boolean hasTangentsAndBitangents() {
-        return m_tangents != null && m_tangents != null;
+        return m_tangents != null && m_bitangents != null;
     }