diff --git a/src/UniTask/Assets/Plugins/UniTask/Runtime/UniTaskObservableExtensions.cs b/src/UniTask/Assets/Plugins/UniTask/Runtime/UniTaskObservableExtensions.cs
index 540395a..d54a5fd 100644
--- a/src/UniTask/Assets/Plugins/UniTask/Runtime/UniTaskObservableExtensions.cs
+++ b/src/UniTask/Assets/Plugins/UniTask/Runtime/UniTaskObservableExtensions.cs
@@ -74,16 +74,19 @@ namespace Cysharp.Threading.Tasks
 
         static async UniTaskVoid Fire<T>(AsyncSubject<T> subject, UniTask<T> task)
         {
+            T value;
             try
             {
-                var value = await task;
-                subject.OnNext(value);
-                subject.OnCompleted();
+                value = await task;
             }
             catch (Exception ex)
             {
                 subject.OnError(ex);
+                return;
             }
+
+            subject.OnNext(value);
+            subject.OnCompleted();
         }
 
         static async UniTaskVoid Fire(AsyncSubject<AsyncUnit> subject, UniTask task)
@@ -91,13 +94,15 @@ namespace Cysharp.Threading.Tasks
             try
             {
                 await task;
-                subject.OnNext(AsyncUnit.Default);
-                subject.OnCompleted();
             }
             catch (Exception ex)
             {
                 subject.OnError(ex);
+                return;
             }
+
+            subject.OnNext(AsyncUnit.Default);
+            subject.OnCompleted();
         }
 
         class ToUniTaskObserver<T> : IObserver<T>