diff --git a/android/src/main/kotlin/fr/g123k/torch_compat/TorchCompatPlugin.kt b/android/src/main/kotlin/fr/g123k/torch_compat/TorchCompatPlugin.kt
index 42d1e9f..ff1a090 100644
--- a/android/src/main/kotlin/fr/g123k/torch_compat/TorchCompatPlugin.kt
+++ b/android/src/main/kotlin/fr/g123k/torch_compat/TorchCompatPlugin.kt
@@ -26,7 +26,7 @@ class TorchCompatPlugin(activity: Activity) : MethodCallHandler {
         }
 
         activity.application.registerActivityLifecycleCallbacks(object : ActivityLifecycleCallbacks() {
-            override fun onActivityStopped(activity: Activity?) {
+            override fun onActivityStopped(activity: Activity) {
                 torchImpl.dispose()
             }
         })
diff --git a/android/src/main/kotlin/fr/g123k/torch_compat/utils/ActivityLifecycleCallbacks.kt b/android/src/main/kotlin/fr/g123k/torch_compat/utils/ActivityLifecycleCallbacks.kt
index bd79529..084cd9c 100644
--- a/android/src/main/kotlin/fr/g123k/torch_compat/utils/ActivityLifecycleCallbacks.kt
+++ b/android/src/main/kotlin/fr/g123k/torch_compat/utils/ActivityLifecycleCallbacks.kt
@@ -5,25 +5,25 @@ import android.app.Application
 import android.os.Bundle
 
 open class ActivityLifecycleCallbacks : Application.ActivityLifecycleCallbacks {
-    override fun onActivityPaused(activity: Activity?) {
+    override fun onActivityPaused(activity: Activity) {
     }
 
-    override fun onActivityResumed(activity: Activity?) {
+    override fun onActivityResumed(activity: Activity) {
     }
 
-    override fun onActivityStarted(activity: Activity?) {
+    override fun onActivityStarted(activity: Activity) {
     }
 
-    override fun onActivityDestroyed(activity: Activity?) {
+    override fun onActivityDestroyed(activity: Activity) {
     }
 
-    override fun onActivitySaveInstanceState(activity: Activity?, outState: Bundle?) {
+    override fun onActivitySaveInstanceState(activity: Activity, outState: Bundle) {
     }
 
-    override fun onActivityStopped(activity: Activity?) {
+    override fun onActivityStopped(activity: Activity) {
     }
 
-    override fun onActivityCreated(activity: Activity?, savedInstanceState: Bundle?) {
+    override fun onActivityCreated(activity: Activity, savedInstanceState: Bundle?) {
     }
 
 }
\ No newline at end of file