diff --git a/interim/source_strings.yaml b/interim/source_strings.yaml
index 319c3fb3..0b84ea1c 100644
--- a/interim/source_strings.yaml
+++ b/interim/source_strings.yaml
@@ -738,8 +738,8 @@ en:
           handicraft: Handicraft
           # craft=hvac
           hvac: HVAC
-          # craft=insulator
-          insulator: Insulator
+          # craft=insulation
+          insulation: Insulator
           # craft=jeweller
           jeweller: Jeweller
           # craft=joiner