diff --git a/CHANGES b/CHANGES
index 429045f9a5..d1e4b2aa75 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,4 @@
+    * Fix incorrect usage of once flag in async Sentinel
     * asyncio: Fix memory leak caused by hiredis (#2693)
     * Allow data to drain from async PythonParser when reading during a disconnect()
     * Use asyncio.timeout() instead of async_timeout.timeout() for python >= 3.11 (#2602)
diff --git a/redis/asyncio/sentinel.py b/redis/asyncio/sentinel.py
index ec17886fc6..c3c0f91545 100644
--- a/redis/asyncio/sentinel.py
+++ b/redis/asyncio/sentinel.py
@@ -220,13 +220,13 @@ async def execute_command(self, *args, **kwargs):
             kwargs.pop("once")
 
         if once:
+            await random.choice(self.sentinels).execute_command(*args, **kwargs)
+        else:
             tasks = [
                 asyncio.Task(sentinel.execute_command(*args, **kwargs))
                 for sentinel in self.sentinels
             ]
             await asyncio.gather(*tasks)
-        else:
-            await random.choice(self.sentinels).execute_command(*args, **kwargs)
         return True
 
     def __repr__(self):