diff --git a/scripts/firecloud_api/firecloud_api2.py b/scripts/firecloud_api/firecloud_api2.py
index 2eca2da1bc..828d70b609 100644
--- a/scripts/firecloud_api/firecloud_api2.py
+++ b/scripts/firecloud_api/firecloud_api2.py
@@ -219,7 +219,7 @@ def poll_job_status(self, submission_id):
 
         return workflow_status_map
 
-    def quote_values(inputs_json):
+    def quote_values(self, inputs_json):
         return {key: f'"{value}"' for key, value in inputs_json.items()}
 
     def get_workflow_outputs(self, submission_id, workflow_id, pipeline_name):