diff --git a/app/src/main/java/net/kdt/pojavlaunch/PojavLauncherActivity.java b/app/src/main/java/net/kdt/pojavlaunch/PojavLauncherActivity.java
index 9996a4d14..eb60752ad 100644
--- a/app/src/main/java/net/kdt/pojavlaunch/PojavLauncherActivity.java
+++ b/app/src/main/java/net/kdt/pojavlaunch/PojavLauncherActivity.java
@@ -203,9 +203,6 @@ public class PojavLauncherActivity extends BaseLauncherActivity
     }
 
     public void statusIsLaunching(boolean isLaunching) {
-        // As preference fragment put to tab, changes without notice, so need re-load pref
-        if (isLaunching) LauncherPreferences.loadPreferences();
-        
         LinearLayout.LayoutParams reparam = new LinearLayout.LayoutParams((int) updateWidthHeight(), LinearLayout.LayoutParams.WRAP_CONTENT);
         ViewGroup.MarginLayoutParams lmainTabParam = (ViewGroup.MarginLayoutParams) fullTab.getLayoutParams();
         int launchVisibility = isLaunching ? View.VISIBLE : View.GONE;
diff --git a/app/src/main/java/net/kdt/pojavlaunch/PojavLoginActivity.java b/app/src/main/java/net/kdt/pojavlaunch/PojavLoginActivity.java
index 7adba7acd..920cb6ae1 100644
--- a/app/src/main/java/net/kdt/pojavlaunch/PojavLoginActivity.java
+++ b/app/src/main/java/net/kdt/pojavlaunch/PojavLoginActivity.java
@@ -308,7 +308,7 @@ public class PojavLoginActivity extends BaseActivity
     private boolean isJavaRuntimeInstalled(AssetManager am) {
         boolean prefValue = firstLaunchPrefs.getBoolean(PREF_IS_INSTALLED_JAVARUNTIME, false);
         try {
-            return prefValue && Tools.read(new FileInputStream(Tools.homeJreDir+"/version")).equals(Tools.read(am.open("components/jre/version")));
+            return prefValue && (am.open("components/jre/bin-" + Tools.currentArch.split("/")[0] + ".tar.xz") == null || Tools.read(new FileInputStream(Tools.homeJreDir+"/version")).equals(Tools.read(am.open("components/jre/version"))));
         } catch(IOException e) {
             Log.e("JVMCtl","failed to read file",e);
             return prefValue;
diff --git a/app/src/main/java/net/kdt/pojavlaunch/prefs/LauncherPreferenceActivity.java b/app/src/main/java/net/kdt/pojavlaunch/prefs/LauncherPreferenceActivity.java
index c30db01bc..c53e964b2 100644
--- a/app/src/main/java/net/kdt/pojavlaunch/prefs/LauncherPreferenceActivity.java
+++ b/app/src/main/java/net/kdt/pojavlaunch/prefs/LauncherPreferenceActivity.java
@@ -15,7 +15,8 @@ public class LauncherPreferenceActivity extends MinePrefActivity
 	@Override
 	public void onBackPressed() {
 		super.onBackPressed();
-		LauncherPreferences.loadPreferences();
 	}
+    
+    
 }
 
diff --git a/app/src/main/java/net/kdt/pojavlaunch/prefs/LauncherPreferenceFragment.java b/app/src/main/java/net/kdt/pojavlaunch/prefs/LauncherPreferenceFragment.java
index 8bc51382d..39b9005ad 100644
--- a/app/src/main/java/net/kdt/pojavlaunch/prefs/LauncherPreferenceFragment.java
+++ b/app/src/main/java/net/kdt/pojavlaunch/prefs/LauncherPreferenceFragment.java
@@ -6,8 +6,9 @@ import android.support.v7.preference.*;
 import net.kdt.pojavlaunch.*;
 
 import net.kdt.pojavlaunch.R;
+import android.content.*;
 
-public class LauncherPreferenceFragment extends PreferenceFragmentCompat
+public class LauncherPreferenceFragment extends PreferenceFragmentCompat implements SharedPreferences.OnSharedPreferenceChangeListener
 {
 	@Override
 	public void onCreatePreferences(Bundle b, String str) {
@@ -30,12 +31,22 @@ public class LauncherPreferenceFragment extends PreferenceFragmentCompat
         seek4.setMin(20);
         seek4.setMax(500);
         seek4.setValue((int) LauncherPreferences.PREF_MOUSESCALE);
-        
 	}
 
     @Override
-    public void onHiddenChanged(boolean hidden) {
-        super.onHiddenChanged(hidden);
-        if (hidden) LauncherPreferences.loadPreferences();
+    public void onResume() {
+        super.onResume();
+        getPreferenceManager().getSharedPreferences().registerOnSharedPreferenceChangeListener(this);
+    }
+
+    @Override
+    public void onPause() {
+        getPreferenceManager().getSharedPreferences().unregisterOnSharedPreferenceChangeListener(this);
+        super.onPause();
+    }
+
+    @Override
+    public void onSharedPreferenceChanged(SharedPreferences p, String s) {
+        LauncherPreferences.loadPreferences();
     }
 }
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 99c4a9384..fc8e8149e 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -198,6 +198,9 @@
     <string name="customctrl_dynamicpos">Dynamic position</string>
     <string name="customctrl_dynamicpos_x">Dynamic X</string>
     <string name="customctrl_dynamicpos_y">Dynamic Y</string>
+
+    <string name="customctrl_transparency_bg">Background transparency</string>
+    <string name="customctrl_transparency_text">Text transparency</string>
     
     <string name="customctrl_keycombine">Key combination</string>
     <string name="customctrl_keycombine_alt">Alt</string>