diff --git a/transpiler/src/main/java/org/jsweet/transpiler/extension/RemoveJavaDependenciesAdapter.java b/transpiler/src/main/java/org/jsweet/transpiler/extension/RemoveJavaDependenciesAdapter.java
index d4c916ad..2c9216dc 100644
--- a/transpiler/src/main/java/org/jsweet/transpiler/extension/RemoveJavaDependenciesAdapter.java
+++ b/transpiler/src/main/java/org/jsweet/transpiler/extension/RemoveJavaDependenciesAdapter.java
@@ -1360,6 +1360,8 @@ public class RemoveJavaDependenciesAdapter extends Java2TypeScriptAdapter {
 		case "java.util.LinkedList":
 		case "java.util.Vector":
 		case "java.util.Stack":
+		case "java.util.TreeSet":
+		case "java.util.HashSet":
 			if (newClass.getArgumentCount() == 0) {
 				print("[]");
 			} else {
diff --git a/transpiler/src/test/java/source/nativestructures/Collections.java b/transpiler/src/test/java/source/nativestructures/Collections.java
index c5fec50e..e3fcf9ae 100644
--- a/transpiler/src/test/java/source/nativestructures/Collections.java
+++ b/transpiler/src/test/java/source/nativestructures/Collections.java
@@ -15,6 +15,7 @@ import java.util.LinkedList;
 import java.util.List;
 import java.util.Set;
 import java.util.Stack;
+import java.util.TreeSet;
 import java.util.Vector;
 
 import def.js.Array;
@@ -312,6 +313,11 @@ public class Collections implements Cloneable, Serializable {
 			}
 		});
 		
+		HashSet<String> aSet = new HashSet<>();		
+		Set<String> aSet2 = new HashSet<>();		
+		Set<String> aSet3 = new TreeSet<>();		
+		List<String> aList = new ArrayList<>();		
+		
 		$export("trace", trace.join(","));
 
 	}