diff --git a/scripts/override-default b/scripts/override-default
index 5058e79b3a..41467cc7dd 100755
--- a/scripts/override-default
+++ b/scripts/override-default
@@ -25,6 +25,7 @@
 # relative to path; replace and remove to override the value.
 
 import sys
+import json
 import glob
 import logging
 from copy import deepcopy