diff --git a/React/CoreModules/RCTAlertController.m b/React/CoreModules/RCTAlertController.m
index 02636c3f4a7b8f..06f8fc2ac8e2d9 100644
--- a/React/CoreModules/RCTAlertController.m
+++ b/React/CoreModules/RCTAlertController.m
@@ -20,10 +20,17 @@ @implementation RCTAlertController
 - (UIWindow *)alertWindow
 {
   if (_alertWindow == nil) {
-    _alertWindow = [[UIWindow alloc] initWithFrame:RCTSharedApplication().keyWindow.bounds];
+  UIWindow *keyWindow = RCTSharedApplication().keyWindow;
+  if (keyWindow) {
+    _alertWindow = [[UIWindow alloc] initWithFrame:keyWindow.bounds];
     _alertWindow.rootViewController = [UIViewController new];
     _alertWindow.windowLevel = UIWindowLevelAlert + 1;
+  } else {
+    // keyWindow is nil, so we cannot create and initialize _alertWindow
+    NSLog(@"Unable to create alert window: keyWindow is nil");
   }
+}
+
   return _alertWindow;
 }