2 files changed, 5 insertions, 7 deletions
diff --git a/src/main/java/org/zwobble/couscous/frontends/java/FreeVariables.java b/src/main/java/org/zwobble/couscous/frontends/java/FreeVariables.java
index bd55979..99cc9b4 100644
--- a/src/main/java/org/zwobble/couscous/frontends/java/FreeVariables.java
+++ b/src/main/java/org/zwobble/couscous/frontends/java/FreeVariables.java
@@ -12,13 +12,10 @@ import static org.zwobble.couscous.util.Casts.tryCast;
 import static org.zwobble.couscous.util.ExtraStreams.toStream;
 
 public class FreeVariables {
-    public static List<VariableDeclaration> findFreeVariables(List<FormalArgumentNode> formalArguments, List<? extends Node> body) {
+    public static List<VariableDeclaration> findFreeVariables(List<? extends Node> body) {
         Stream<VariableDeclaration> referencedDeclarations = body.stream()
             .flatMap(FreeVariables::findReferencedDeclarations);
-        Stream<VariableDeclaration> declarations = Stream.concat(
-            formalArguments.stream()
-                .map(argument -> argument.getDeclaration()),
-            body.stream().flatMap(FreeVariables::findDeclarations));
+        Stream<VariableDeclaration> declarations = body.stream().flatMap(FreeVariables::findDeclarations);
         return Sets.difference(
             referencedDeclarations.collect(Collectors.toSet()),
             declarations.collect(Collectors.toSet())).stream().collect(Collectors.toList());
diff --git a/src/main/java/org/zwobble/couscous/frontends/java/JavaReader.java b/src/main/java/org/zwobble/couscous/frontends/java/JavaReader.java
index 0d04d02..8ca1a5f 100644
--- a/src/main/java/org/zwobble/couscous/frontends/java/JavaReader.java
+++ b/src/main/java/org/zwobble/couscous/frontends/java/JavaReader.java
@@ -49,8 +49,9 @@ public class JavaReader {
         String className = generateClassName(expression);
         LambdaDeclarationAdaptor lambda = new LambdaDeclarationAdaptor(expression);
         List<VariableDeclaration> freeVariables = findFreeVariables(
-            lambda.getFormalArguments().collect(Collectors.toList()),
-            lambda.getBody());
+            Stream.concat(
+                lambda.getFormalArguments(),
+                lambda.getBody().stream()).collect(Collectors.toList()));
 
         ClassNode classNode = new ClassNodeBuilder(className)
             .constructor(buildConstructor(TypeName.of(className), freeVariables))