diff --git a/src/app/services/cncengine/CNCEngine.js b/src/app/services/cncengine/CNCEngine.js
index 281370c4b..5ab28a23b 100644
--- a/src/app/services/cncengine/CNCEngine.js
+++ b/src/app/services/cncengine/CNCEngine.js
@@ -39,6 +39,8 @@ const caseInsensitiveEquals = (str1, str2) => {
 const isValidController = (controller) => (
     // Grbl
     caseInsensitiveEquals(GRBL, controller) ||
+    // Marlin
+    caseInsensitiveEquals(MARLIN, controller) ||
     // Smoothie
     caseInsensitiveEquals(SMOOTHIE, controller) ||
     // g2core