diff --git a/app/src/main/java/eu/faircode/email/ActivityBilling.java b/app/src/main/java/eu/faircode/email/ActivityBilling.java
index e4c854e612..c90c5678ed 100644
--- a/app/src/main/java/eu/faircode/email/ActivityBilling.java
+++ b/app/src/main/java/eu/faircode/email/ActivityBilling.java
@@ -155,7 +155,7 @@ abstract class ActivityBilling extends ActivityBase implements PurchasesUpdatedL
             }
 
             int responseCode = billingClient.launchBillingFlow(this, flowParams.build());
-            String text = Helper.getBillingResponseText(responseCode);
+            String text = getBillingResponseText(responseCode);
             Log.i("IAB launch billing flow response=" + text);
             if (responseCode != BillingClient.BillingResponse.OK)
                 Snackbar.make(getVisibleView(), text, Snackbar.LENGTH_LONG).show();
@@ -203,7 +203,7 @@ abstract class ActivityBilling extends ActivityBase implements PurchasesUpdatedL
 
         @Override
         public void onBillingSetupFinished(@BillingClient.BillingResponse int responseCode) {
-            String text = Helper.getBillingResponseText(responseCode);
+            String text = getBillingResponseText(responseCode);
             Log.i("IAB connected response=" + text);
 
             if (!getLifecycle().getCurrentState().isAtLeast(Lifecycle.State.RESUMED))
@@ -233,7 +233,7 @@ abstract class ActivityBilling extends ActivityBase implements PurchasesUpdatedL
 
     @Override
     public void onPurchasesUpdated(int responseCode, @Nullable List<Purchase> purchases) {
-        String text = Helper.getBillingResponseText(responseCode);
+        String text = getBillingResponseText(responseCode);
         Log.i("IAB purchases updated response=" + text);
 
         if (!getLifecycle().getCurrentState().isAtLeast(Lifecycle.State.RESUMED))
@@ -247,7 +247,7 @@ abstract class ActivityBilling extends ActivityBase implements PurchasesUpdatedL
 
     private void queryPurchases() {
         Purchase.PurchasesResult result = billingClient.queryPurchases(BillingClient.SkuType.INAPP);
-        String text = Helper.getBillingResponseText(result.getResponseCode());
+        String text = getBillingResponseText(result.getResponseCode());
         Log.i("IAB query purchases response=" + text);
 
         if (result.getResponseCode() == BillingClient.BillingResponse.OK)
@@ -265,7 +265,7 @@ abstract class ActivityBilling extends ActivityBase implements PurchasesUpdatedL
                 new SkuDetailsResponseListener() {
                     @Override
                     public void onSkuDetailsResponse(int responseCode, List<SkuDetails> skuDetailsList) {
-                        String text = Helper.getBillingResponseText(responseCode);
+                        String text = getBillingResponseText(responseCode);
                         Log.i("IAB query SKUs response=" + text);
                         if (responseCode == BillingClient.BillingResponse.OK) {
                             for (SkuDetails skuDetail : skuDetailsList) {
@@ -333,4 +333,55 @@ abstract class ActivityBilling extends ActivityBase implements PurchasesUpdatedL
             editor.apply();
         }
     }
+
+    static String getBillingResponseText(@BillingClient.BillingResponse int responseCode) {
+        switch (responseCode) {
+            case BillingClient.BillingResponse.BILLING_UNAVAILABLE:
+                // Billing API version is not supported for the type requested
+                return "BILLING_UNAVAILABLE";
+
+            case BillingClient.BillingResponse.DEVELOPER_ERROR:
+                // Invalid arguments provided to the API.
+                return "DEVELOPER_ERROR";
+
+            case BillingClient.BillingResponse.ERROR:
+                // Fatal error during the API action
+                return "ERROR";
+
+            case BillingClient.BillingResponse.FEATURE_NOT_SUPPORTED:
+                // Requested feature is not supported by Play Store on the current device.
+                return "FEATURE_NOT_SUPPORTED";
+
+            case BillingClient.BillingResponse.ITEM_ALREADY_OWNED:
+                // Failure to purchase since item is already owned
+                return "ITEM_ALREADY_OWNED";
+
+            case BillingClient.BillingResponse.ITEM_NOT_OWNED:
+                // Failure to consume since item is not owned
+                return "ITEM_NOT_OWNED";
+
+            case BillingClient.BillingResponse.ITEM_UNAVAILABLE:
+                // Requested product is not available for purchase
+                return "ITEM_UNAVAILABLE";
+
+            case BillingClient.BillingResponse.OK:
+                // Success
+                return "OK";
+
+            case BillingClient.BillingResponse.SERVICE_DISCONNECTED:
+                // Play Store service is not connected now - potentially transient state.
+                return "SERVICE_DISCONNECTED";
+
+            case BillingClient.BillingResponse.SERVICE_UNAVAILABLE:
+                // Network connection is down
+                return "SERVICE_UNAVAILABLE";
+
+            case BillingClient.BillingResponse.USER_CANCELED:
+                // User pressed back or canceled a dialog
+                return "USER_CANCELED";
+
+            default:
+                return Integer.toString(responseCode);
+        }
+    }
 }
diff --git a/app/src/main/java/eu/faircode/email/Helper.java b/app/src/main/java/eu/faircode/email/Helper.java
index 2bfa85cac3..f9320a9a55 100644
--- a/app/src/main/java/eu/faircode/email/Helper.java
+++ b/app/src/main/java/eu/faircode/email/Helper.java
@@ -63,7 +63,6 @@ import androidx.lifecycle.Lifecycle;
 import androidx.lifecycle.LifecycleOwner;
 import androidx.preference.PreferenceManager;
 
-import com.android.billingclient.api.BillingClient;
 import com.google.android.material.bottomnavigation.BottomNavigationView;
 import com.sun.mail.util.MailConnectException;
 
@@ -787,57 +786,6 @@ public class Helper {
         return sb.toString();
     }
 
-    static String getBillingResponseText(@BillingClient.BillingResponse int responseCode) {
-        switch (responseCode) {
-            case BillingClient.BillingResponse.BILLING_UNAVAILABLE:
-                // Billing API version is not supported for the type requested
-                return "BILLING_UNAVAILABLE";
-
-            case BillingClient.BillingResponse.DEVELOPER_ERROR:
-                // Invalid arguments provided to the API.
-                return "DEVELOPER_ERROR";
-
-            case BillingClient.BillingResponse.ERROR:
-                // Fatal error during the API action
-                return "ERROR";
-
-            case BillingClient.BillingResponse.FEATURE_NOT_SUPPORTED:
-                // Requested feature is not supported by Play Store on the current device.
-                return "FEATURE_NOT_SUPPORTED";
-
-            case BillingClient.BillingResponse.ITEM_ALREADY_OWNED:
-                // Failure to purchase since item is already owned
-                return "ITEM_ALREADY_OWNED";
-
-            case BillingClient.BillingResponse.ITEM_NOT_OWNED:
-                // Failure to consume since item is not owned
-                return "ITEM_NOT_OWNED";
-
-            case BillingClient.BillingResponse.ITEM_UNAVAILABLE:
-                // Requested product is not available for purchase
-                return "ITEM_UNAVAILABLE";
-
-            case BillingClient.BillingResponse.OK:
-                // Success
-                return "OK";
-
-            case BillingClient.BillingResponse.SERVICE_DISCONNECTED:
-                // Play Store service is not connected now - potentially transient state.
-                return "SERVICE_DISCONNECTED";
-
-            case BillingClient.BillingResponse.SERVICE_UNAVAILABLE:
-                // Network connection is down
-                return "SERVICE_UNAVAILABLE";
-
-            case BillingClient.BillingResponse.USER_CANCELED:
-                // User pressed back or canceled a dialog
-                return "USER_CANCELED";
-
-            default:
-                return Integer.toString(responseCode);
-        }
-    }
-
     static boolean hasWebView(Context context) {
         PackageManager pm = context.getPackageManager();
         if (pm.hasSystemFeature(PackageManager.FEATURE_WEBVIEW))