diff --git a/instrumentation/opentelemetry-instrumentation-grpc/src/opentelemetry/instrumentation/grpc/grpcext/_interceptor.py b/instrumentation/opentelemetry-instrumentation-grpc/src/opentelemetry/instrumentation/grpc/grpcext/_interceptor.py
index 1b088a8168..1f4254c2ff 100644
--- a/instrumentation/opentelemetry-instrumentation-grpc/src/opentelemetry/instrumentation/grpc/grpcext/_interceptor.py
+++ b/instrumentation/opentelemetry-instrumentation-grpc/src/opentelemetry/instrumentation/grpc/grpcext/_interceptor.py
@@ -328,7 +328,7 @@ def stream_unary(
     ):
         if _registered_method:
             base_callable = self._channel.stream_unary(
-                method, request_serializer, response_deserializer
+                method, request_serializer, response_deserializer, _register_method
             )
         else:
             base_callable = self._channel.stream_unary(