diff --git a/src/main/java/de/tlc4b/analysis/UnsupportedConstructsFinder.java b/src/main/java/de/tlc4b/analysis/UnsupportedConstructsFinder.java
index 1860cd30b40c0e5ea2cf3eb012a5032fa82d18d2..188266a9bae09aeeb945437332aa40304b876a76 100644
--- a/src/main/java/de/tlc4b/analysis/UnsupportedConstructsFinder.java
+++ b/src/main/java/de/tlc4b/analysis/UnsupportedConstructsFinder.java
@@ -21,6 +21,7 @@ public class UnsupportedConstructsFinder extends DepthFirstAdapter {
 		add(APromotesMachineClause.class);
 		add(AIncludesMachineClause.class);
 		add(AImportsMachineClause.class);
+		add(AFreetypesMachineClause.class);
 
 		add(AWhileSubstitution.class);
 		add(AVarSubstitution.class);