diff --git a/recommendations/WindowsRecommendations.py b/recommendations/WindowsRecommendations.py
index cd1b982b..9b85b316 100644
--- a/recommendations/WindowsRecommendations.py
+++ b/recommendations/WindowsRecommendations.py
@@ -223,6 +223,7 @@ class WindowsRecommendations:
                 "phase": phase,
                 "parts": [],
                 "type": "windows_glazing",
+                "measure_type": "double_glazing" if not is_secondary_glazing else "secondary_glazing",
                 "description": description,
                 "starting_u_value": None,
                 "new_u_value": None,