diff --git a/android/app/src/main/java/mw/gri/android/MainActivity.java b/android/app/src/main/java/mw/gri/android/MainActivity.java
index f78e91c..7d6d384 100644
--- a/android/app/src/main/java/mw/gri/android/MainActivity.java
+++ b/android/app/src/main/java/mw/gri/android/MainActivity.java
@@ -310,7 +310,9 @@ public class MainActivity extends GameActivity {
         View content = findViewById(android.R.id.content);
         if (content != null) {
             content.post(() -> {
-                mCameraProvider.unbindAll();
+                if (mCameraProvider != null) {
+                    mCameraProvider.unbindAll();
+                }
             });
         }
     }