diff --git a/set-variables-in-env.js b/set-variables-in-env.js
index b1e3833e..04f4a067 100644
--- a/set-variables-in-env.js
+++ b/set-variables-in-env.js
@@ -8,10 +8,14 @@ if(argv.set) {
     const envFile = argv.set;
     console.log(`Backuping up '${envFile}' into '${tempFile}'.`);
     fs.copyFileSync(envFile, tempFile);
-    const content = fs.readFileSync(envFile, "utf8");
-    const variables = `solarputty_download_url: '${process.env.SOLARPUTTY_DOWNLOAD_URL}',`
-    const replaced = content.replace('//ENV', variables);
-    fs.writeFileSync(envFile, replaced);
+    let content = fs.readFileSync(envFile, "utf8");
+
+    if(process.env.SOLARPUTTY_DOWNLOAD_URL) {
+      const variables = `solarputty_download_url: '${process.env.SOLARPUTTY_DOWNLOAD_URL}',`
+      content = content.replace('solarputty_download_url: "",', variables);
+    }
+
+    fs.writeFileSync(envFile, content);
 }
 
 if(argv.unset) {
diff --git a/src/environments/environment.prod.ts b/src/environments/environment.prod.ts
index d8eafc7b..cd119730 100644
--- a/src/environments/environment.prod.ts
+++ b/src/environments/environment.prod.ts
@@ -1,7 +1,6 @@
 export const environment = {
-  /* Below configuration is replaced during build time, don't remove. */
-  //ENV
   production: true,
   electron: false,
   githubio: false,
+  solarputty_download_url: "",
 };