diff --git a/utils/replace_api_file.ts b/utils/replace_api_file.ts
index 000338d60..d359147f7 100644
--- a/utils/replace_api_file.ts
+++ b/utils/replace_api_file.ts
@@ -26,8 +26,7 @@ function replace_api_file(filePath: string): Promise<void>
             data = data.replaceAll("require(\"./GoodchSimple.fs\")", "\"\"");
 
             data = data.replaceAll("import { iaop } from 'xaop';", "function iaop() { };");
-            data = data.replaceAll("import { observable, toJS } from 'mobx';", "function observable() { };\r\nfunction toJS() { };");
-
+            data = data.replaceAll(/^import.*'mobx';\s*$/gm, "function observable() { };\r\nfunction toJS() { };");
 
             fs.writeFile(filePath, data, err =>
             {