diff --git a/gtk/resources/theme/Adwaita/parse-sass.sh b/gtk/resources/theme/Adwaita/parse-sass.sh
index 333bbc5c63..2486480802 100755
--- a/gtk/resources/theme/Adwaita/parse-sass.sh
+++ b/gtk/resources/theme/Adwaita/parse-sass.sh
@@ -1,3 +1,3 @@
 #!/usr/bin/bash
 
-sass --update --sourcemap=none .
+sass --update .