diff --git a/lignumis/locale/en/strings.cfg b/lignumis/locale/en/strings.cfg
index 17050ae..c7ef442 100644
--- a/lignumis/locale/en/strings.cfg
+++ b/lignumis/locale/en/strings.cfg
@@ -1,3 +1,6 @@
+surface-condition-too-low=__1__ does not fit.
+surface-condition-too-high=__1__ does not fit.
+
 [space-location-name]
 lignumis=Lignumis