diff --git a/qiskit/pulse/instructions/acquire.py b/qiskit/pulse/instructions/acquire.py
index 0322d7742e21..a7abdd33ccf9 100644
--- a/qiskit/pulse/instructions/acquire.py
+++ b/qiskit/pulse/instructions/acquire.py
@@ -90,7 +90,7 @@ def channel(self) -> AcquireChannel:
     @property
     def channels(self) -> Tuple[AcquireChannel]:
         """Returns the channels that this schedule uses."""
-        return self.channel,
+        return (self.channel,)
 
     @property
     def duration(self) -> Union[int, ParameterExpression]: