diff --git a/src/darwin.ts b/src/darwin.ts
index 4364a8d..2ed52f1 100644
--- a/src/darwin.ts
+++ b/src/darwin.ts
@@ -44,7 +44,9 @@ export class DarwinOVM {
     }
 
     public start(): void {
-        const versions = Object.keys(this.options.versions).map((key) => `${key}=${this.options.versions[key]}`).join(",");
+        const versions = Object.keys(this.options.versions).map((key) => {
+            return `${key === "dataImg" ? "data_img" : key}=${this.options.versions[key]}`;
+        }).join(",");
 
         const launchTimeout = new Promise<void>((resolve, reject) => {
             const id = setTimeout(() => {