diff --git a/backend/app.js b/backend/app.js
index 84542fc..8a32dd8 100644
--- a/backend/app.js
+++ b/backend/app.js
@@ -1479,7 +1479,7 @@ async function generateArgs(url, type, options) {
         }
 
         if (customArgs) {
-            downloadConfig = customArgs.split(' ');
+            downloadConfig = customArgs.split(',,');
         } else {
             if (customQualityConfiguration) {
                 qualityPath = `-f ${customQualityConfiguration}`;
@@ -1535,7 +1535,7 @@ async function generateArgs(url, type, options) {
 
             if (globalArgs && globalArgs !== '') {
                 // adds global args
-                downloadConfig = downloadConfig.concat(globalArgs.split(' '));
+                downloadConfig = downloadConfig.concat(globalArgs.split(',,'));
             }
 
         }
diff --git a/src/app/dialogs/arg-modifier-dialog/arg-modifier-dialog.component.ts b/src/app/dialogs/arg-modifier-dialog/arg-modifier-dialog.component.ts
index 087a641..a5df6e2 100644
--- a/src/app/dialogs/arg-modifier-dialog/arg-modifier-dialog.component.ts
+++ b/src/app/dialogs/arg-modifier-dialog/arg-modifier-dialog.component.ts
@@ -72,12 +72,15 @@ export class ArgModifierDialogComponent implements OnInit {
   }
 
   addArg() {
+    if (!this.modified_args) {
+      this.modified_args = '';
+    }
     // adds space
     if (this.modified_args !== '') {
-      this.modified_args += ' ';
+      this.modified_args += ',,';
     }
 
-    this.modified_args += this.stateCtrl.value + ' ' + (this.secondArgEnabled ? this.secondArg : '');
+    this.modified_args += this.stateCtrl.value + (this.secondArgEnabled ? ',,' + this.secondArg : '');
   }
 
   canAddArg() {
diff --git a/src/app/main/main.component.ts b/src/app/main/main.component.ts
index 1ea5241..147c679 100644
--- a/src/app/main/main.component.ts
+++ b/src/app/main/main.component.ts
@@ -864,7 +864,7 @@ export class MainComponent implements OnInit {
     const base_string_array = ['youtube-dl', this.url];
 
     if (customArgsExists) {
-      this.simulatedOutput = base_string_array.join(' ') + ' ' + this.customArgs;
+      this.simulatedOutput = base_string_array.join(' ') + ' ' + this.customArgs.split(',,').join(' ');
       return this.simulatedOutput;
     }
 
@@ -924,7 +924,7 @@ export class MainComponent implements OnInit {
     }
 
     if (globalArgsExists) {
-      full_string_array = full_string_array.concat(this.globalCustomArgs.split(' '));
+      full_string_array = full_string_array.concat(this.globalCustomArgs.split(',,'));
     }
 
     this.simulatedOutput = full_string_array.join(' ');