diff --git a/plugins/CuraEngineBackend/Cura.proto b/plugins/CuraEngineBackend/Cura.proto
index c51829aeff..c2b6a142b4 100644
--- a/plugins/CuraEngineBackend/Cura.proto
+++ b/plugins/CuraEngineBackend/Cura.proto
@@ -12,7 +12,7 @@ message Slice
 {
     repeated ObjectList object_lists = 1;
     SettingList global_settings = 2;
-    repeated SettingsList extruder_settings = 3;
+    repeated SettingList extruder_settings = 3;
 }
 
 message Object