diff --git a/core/src/main/java/org/teavm/backend/wasm/generate/WasmDependencyListener.java b/core/src/main/java/org/teavm/backend/wasm/generate/WasmDependencyListener.java
index 522660888..84b770b4f 100644
--- a/core/src/main/java/org/teavm/backend/wasm/generate/WasmDependencyListener.java
+++ b/core/src/main/java/org/teavm/backend/wasm/generate/WasmDependencyListener.java
@@ -32,11 +32,8 @@ import org.teavm.model.MethodHolder;
 import org.teavm.model.MethodReader;
 
 public class WasmDependencyListener extends AbstractDependencyListener implements ClassHolderTransformer {
-
     @Override
     public void classReached(DependencyAgent agent, String className, CallLocation location) {
-        super.classReached(agent, className, location);
-
         for (MethodReader reader : agent.getClassSource().get(className).getMethods()) {
             AnnotationReader annotation = reader.getAnnotations().get(Export.class.getName());
             if (annotation != null) {
diff --git a/core/src/main/java/org/teavm/model/ClassReaderSource.java b/core/src/main/java/org/teavm/model/ClassReaderSource.java
index 0617b05a7..a3ba62010 100644
--- a/core/src/main/java/org/teavm/model/ClassReaderSource.java
+++ b/core/src/main/java/org/teavm/model/ClassReaderSource.java
@@ -109,7 +109,7 @@ public interface ClassReaderSource {
     default Stream<MethodReader> overriddenMethods(MethodReference method) {
         return getAncestorClasses(method.getClassName())
                 .map(cls -> cls.getMethod(method.getDescriptor()))
-                .filter(candidate -> candidate != null);
+                .filter(Objects::nonNull);
     }
 
     default Optional<Boolean> isSuperType(String superType, String subType) {