diff --git a/core/resources/l10n/messages.properties b/core/resources/l10n/messages.properties
index c935ef6c8..cb81d794c 100644
--- a/core/resources/l10n/messages.properties
+++ b/core/resources/l10n/messages.properties
@@ -1307,6 +1307,7 @@ Material.CUSTOM = Custom
 Databases.materials.types.Bulk = Bulk
 Databases.materials.types.Line = Line
 Databases.materials.types.Surface = Surface
+Databases.materials.types.Custom = Custom
 
 ! BULK_MATERIAL
 material.acrylic = Acrylic