diff --git a/packages/google_sign_in/google_sign_in_ios/ios/Classes/FLTGoogleSignInPlugin.m b/packages/google_sign_in/google_sign_in_ios/ios/Classes/FLTGoogleSignInPlugin.m
index 193c15e1ee3c..91e0a23a4922 100644
--- a/packages/google_sign_in/google_sign_in_ios/ios/Classes/FLTGoogleSignInPlugin.m
+++ b/packages/google_sign_in/google_sign_in_ios/ios/Classes/FLTGoogleSignInPlugin.m
@@ -173,8 +173,9 @@ - (void)getAccessTokenWithCompletion:(nonnull void (^)(FSITokenData *_Nullable,
   }];
 }
 
-- (void)signOutWithError:(FlutterError *_Nullable *_Nonnull)error;
-{ [self.signIn signOut]; }
+- (void)signOutWithError:(FlutterError *_Nullable *_Nonnull)error {
+  [self.signIn signOut];
+}
 
 - (void)disconnectWithCompletion:(nonnull void (^)(FlutterError *_Nullable))completion {
   [self.signIn disconnectWithCallback:^(NSError *error) {