diff --git a/drivers/staging/greybus/operation.c b/drivers/staging/greybus/operation.c
index eee315c5861d..3392b425a6c2 100644
--- a/drivers/staging/greybus/operation.c
+++ b/drivers/staging/greybus/operation.c
@@ -29,6 +29,9 @@ static struct workqueue_struct *gb_operation_workqueue;
  */
 static DEFINE_SPINLOCK(gb_operations_lock);
 
+static int gb_operation_response_send(struct gb_operation *operation,
+					int errno);
+
 /*
  * Set an operation's result.
  *
@@ -649,7 +652,8 @@ EXPORT_SYMBOL_GPL(gb_operation_request_send_sync);
  * it can simply supply the result errno; this function will
  * allocate the response message if necessary.
  */
-int gb_operation_response_send(struct gb_operation *operation, int errno)
+static int gb_operation_response_send(struct gb_operation *operation,
+					int errno)
 {
 	struct gb_connection *connection = operation->connection;
 	int ret;
@@ -685,7 +689,6 @@ int gb_operation_response_send(struct gb_operation *operation, int errno)
 
 	return ret;
 }
-EXPORT_SYMBOL_GPL(gb_operation_response_send);
 
 /*
  * This function is called when a message send request has completed.
diff --git a/drivers/staging/greybus/operation.h b/drivers/staging/greybus/operation.h
index 40632238845e..3bf757195fa3 100644
--- a/drivers/staging/greybus/operation.h
+++ b/drivers/staging/greybus/operation.h
@@ -150,7 +150,6 @@ int gb_operation_request_send(struct gb_operation *operation,
 				gb_operation_callback callback,
 				gfp_t gfp);
 int gb_operation_request_send_sync(struct gb_operation *operation);
-int gb_operation_response_send(struct gb_operation *operation, int errno);
 
 void gb_operation_cancel(struct gb_operation *operation, int errno);