diff --git a/src/de.hpi.swa.trufflesqueak/src/de/hpi/swa/trufflesqueak/util/NFIUtils.java b/src/de.hpi.swa.trufflesqueak/src/de/hpi/swa/trufflesqueak/util/NFIUtils.java
index f4929f93d..25adaa4ca 100644
--- a/src/de.hpi.swa.trufflesqueak/src/de/hpi/swa/trufflesqueak/util/NFIUtils.java
+++ b/src/de.hpi.swa.trufflesqueak/src/de/hpi/swa/trufflesqueak/util/NFIUtils.java
@@ -86,7 +86,7 @@ public TruffleClosure(final SqueakImageContext context, final TruffleExecutable
     }
 
     public interface ITruffleExecutable {
-        Object execute(final Object... arguments);
+        Object execute(Object... arguments);
     }
 
     @FunctionalInterface