diff --git a/app/build.gradle b/app/build.gradle
index f9be3fbd..b528a4f2 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -7,8 +7,8 @@ android {
         applicationId "org.meowcat.edxposed.manager"
         minSdkVersion 21
         targetSdkVersion 27
-        versionCode 45404
-        versionName "4.5.4"
+        versionCode 45405
+        versionName "4.5.4.1"
     }
     buildTypes {
         release {
@@ -16,6 +16,10 @@ android {
             shrinkResources true
             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
         }
+        debug {
+            minifyEnabled false
+            shrinkResources false
+        }
     }
     compileOptions {
         sourceCompatibility = 1.8
diff --git a/app/src/main/java/org/meowcat/edxposed/manager/DownloadDetailsVersionsFragment.java b/app/src/main/java/org/meowcat/edxposed/manager/DownloadDetailsVersionsFragment.java
index bfe9627c..debab8a7 100644
--- a/app/src/main/java/org/meowcat/edxposed/manager/DownloadDetailsVersionsFragment.java
+++ b/app/src/main/java/org/meowcat/edxposed/manager/DownloadDetailsVersionsFragment.java
@@ -42,7 +42,7 @@ import static org.meowcat.edxposed.manager.XposedApp.WRITE_EXTERNAL_PERMISSION;
 
 public class DownloadDetailsVersionsFragment extends ListFragment {
     private DownloadDetailsActivity mActivity;
-    private View rootView;
+    private static View rootView;
 
     @Override
     public void onActivityCreated(Bundle savedInstanceState) {
@@ -124,7 +124,6 @@ public class DownloadDetailsVersionsFragment extends ListFragment {
         @Override
         public void onDownloadFinished(Context context, DownloadsUtil.DownloadInfo info) {
             File localFile = new File(info.localFilename);
-            View rootView = ((Activity) context).findViewById(R.id.snackbar);
             if (!localFile.isFile())
                 return;