diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
index 57cc7ac..1816a95 100644
--- a/app/proguard-rules.pro
+++ b/app/proguard-rules.pro
@@ -8,9 +8,9 @@
 # If your project uses WebView with JS, uncomment the following
 # and specify the fully qualified class name to the JavaScript interface
 # class:
-#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
-#   public *;
-#}
+-keepclassmembers class  com.fox2code.mmm.androidacy.AndroidacyWebAPI {
+   public *;
+}
 
 # Uncomment this to preserve the line number information for
 # debugging stack traces.
diff --git a/app/src/main/java/com/fox2code/mmm/installer/InstallerActivity.java b/app/src/main/java/com/fox2code/mmm/installer/InstallerActivity.java
index 135061a..d62c0f3 100644
--- a/app/src/main/java/com/fox2code/mmm/installer/InstallerActivity.java
+++ b/app/src/main/java/com/fox2code/mmm/installer/InstallerActivity.java
@@ -395,10 +395,12 @@ public class InstallerActivity extends FoxActivity {
                 installerController.useRecoveryExt();
             } else if (needs32bit || (compatFlags & AppUpdateManager.FLAG_COMPAT_NO_EXT) == 0) {
                 // Restore Magisk legacy stuff for retro compatibility
-                if (Build.SUPPORTED_32_BIT_ABIS[0].contains("arm"))
-                    arch32 = "export ARCH32=arm";
-                if (Build.SUPPORTED_32_BIT_ABIS[0].contains("x86"))
-                    arch32 = "export ARCH32=x86";
+                if (Build.SUPPORTED_32_BIT_ABIS.length > 0) {
+                    if (Build.SUPPORTED_32_BIT_ABIS[0].contains("arm"))
+                        arch32 = "export ARCH32=arm";
+                    if (Build.SUPPORTED_32_BIT_ABIS[0].contains("x86"))
+                        arch32 = "export ARCH32=x86";
+                }
             }
             String installCommand;
             File installExecutable;