diff --git a/src/org/rascalmpl/ideservices/GsonUtils.java b/src/org/rascalmpl/ideservices/GsonUtils.java
index e9b2ee320c..5946c97c3d 100644
--- a/src/org/rascalmpl/ideservices/GsonUtils.java
+++ b/src/org/rascalmpl/ideservices/GsonUtils.java
@@ -216,7 +216,7 @@ public static Consumer<GsonBuilder> complexAsJsonObject() {
      * This configurtion should only be used for serialization; deserialization requires a {@link TypeStore).
      */
     public static Consumer<GsonBuilder> complexAsBase64String() {
-        return builder -> complexAsBase64String(new TypeStore());
+        return complexAsBase64String(new TypeStore());
     }
 
     /**
@@ -236,7 +236,7 @@ public static Consumer<GsonBuilder> complexAsBase64String(TypeStore ts) {
      * This configurtion should only be used for serialization; deserialization requires a {@link TypeStore).
      */
     public static Consumer<GsonBuilder> complexAsString() {
-        return builder -> complexAsString(new TypeStore());
+        return complexAsString(new TypeStore());
     }
 
     /**