diff --git a/DulcificumJS/package.json b/DulcificumJS/package.json
index b1e0ca2..0bbefba 100644
--- a/DulcificumJS/package.json
+++ b/DulcificumJS/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@ultimaker/dulcificumjs",
-  "version": "0.1.0-alpha.6",
+  "version": "0.1.0-alpha.7",
   "description": "DulcificumJS is a TS component to run Dulcificum in a browser",
   "main": "dist/index.js",
   "scripts": {
diff --git a/DulcificumJS/src/index.ts b/DulcificumJS/src/index.ts
index 5197bd4..01ca2a9 100644
--- a/DulcificumJS/src/index.ts
+++ b/DulcificumJS/src/index.ts
@@ -13,5 +13,8 @@ export async function initialize(): Promise<void> {
 }
 
 export function gcode_2_miracle_jtp(input: string): string {
+  if (mod == null) {
+    return "";
+  }
   return <string> mod.gcode_2_miracle_jtp(input);
 }