diff --git a/engine/api/src/main/java/pl/touk/nussknacker/engine/javaapi/process/ExpressionConfig.java b/engine/api/src/main/java/pl/touk/nussknacker/engine/javaapi/process/ExpressionConfig.java
index 9d6f2347a8b..38dcdf338e7 100644
--- a/engine/api/src/main/java/pl/touk/nussknacker/engine/javaapi/process/ExpressionConfig.java
+++ b/engine/api/src/main/java/pl/touk/nussknacker/engine/javaapi/process/ExpressionConfig.java
@@ -29,16 +29,16 @@ public class ExpressionConfig implements Serializable {
 
     private final boolean hideMetaVariable;
 
-    public ExpressionConfig(Map<String, WithCategories<Object>> globalProcessVariables, List<WithCategories<String>> globalImports, List<Class> testValue) {
-        this(globalProcessVariables, globalImports, testValue, new LanguageConfiguration(List$.MODULE$.empty()), true, true, Collections.emptyMap(), false);
+    public ExpressionConfig(Map<String, WithCategories<Object>> globalProcessVariables, List<WithCategories<String>> globalImports, List<Class> allowedClasses) {
+        this(globalProcessVariables, globalImports, allowedClasses, new LanguageConfiguration(List$.MODULE$.empty()), true, true, Collections.emptyMap(), false);
     }
 
     public ExpressionConfig(Map<String, WithCategories<Object>> globalProcessVariables, List<WithCategories<String>> globalImports,
-                            List<Class> testValue, LanguageConfiguration languages, boolean optimizeCompilation, boolean strictTypeChecking,
+                            List<Class> allowedClasses, LanguageConfiguration languages, boolean optimizeCompilation, boolean strictTypeChecking,
                             Map<String, WithCategories<DictDefinition>> dictionaries, boolean hideMetaVariable) {
         this.globalProcessVariables = globalProcessVariables;
         this.globalImports = globalImports;
-        this.allowedClasses = testValue;
+        this.allowedClasses = allowedClasses;
         this.languages = languages;
         this.optimizeCompilation = optimizeCompilation;
         this.strictTypeChecking = strictTypeChecking;
diff --git a/engine/interpreter/src/main/scala/pl/touk/nussknacker/engine/definition/DefinitionExtractor.scala b/engine/interpreter/src/main/scala/pl/touk/nussknacker/engine/definition/DefinitionExtractor.scala
index 51630b6555a..1fe82b13a9e 100644
--- a/engine/interpreter/src/main/scala/pl/touk/nussknacker/engine/definition/DefinitionExtractor.scala
+++ b/engine/interpreter/src/main/scala/pl/touk/nussknacker/engine/definition/DefinitionExtractor.scala
@@ -200,7 +200,7 @@ object DefinitionExtractor {
     def extractFromList(objectToExtractClassesFromCollection: Iterable[Class[_]])
                        (implicit settings: ClassExtractionSettings): Set[TypeInfos.ClazzDefinition] = {
       val ref = objectToExtractClassesFromCollection.map(Typed.apply)
-      TypesInformationExtractor.clazzAndItsChildrenDefinition(ref) (settings)
+      TypesInformationExtractor.clazzAndItsChildrenDefinition(ref)
     }
 
     private def extractTypesFromObjectDefinition(obj: ObjectWithMethodDef): List[TypingResult] = {