diff --git a/runtime/native/dalvik_system_DexFile.cc b/runtime/native/dalvik_system_DexFile.cc
index 9f9d82b..716356e 100644
--- a/runtime/native/dalvik_system_DexFile.cc
+++ b/runtime/native/dalvik_system_DexFile.cc
@@ -200,7 +200,7 @@
 static jobjectArray DexFile_getClassNameList(JNIEnv* env, jclass, jlong cookie) {
   jobjectArray result = nullptr;
   const DexFile* dex_file = toDexFile(cookie, env);
-  if (dex_file == nullptr) {
+  if (dex_file != nullptr) {
     result = env->NewObjectArray(dex_file->NumClassDefs(), WellKnownClasses::java_lang_String,
                                  nullptr);
     if (result != nullptr) {