diff --git a/ShareX.UploadersLib/URLShorteners/CustomURLShortener.cs b/ShareX.UploadersLib/URLShorteners/CustomURLShortener.cs
index c606053db..776651032 100644
--- a/ShareX.UploadersLib/URLShorteners/CustomURLShortener.cs
+++ b/ShareX.UploadersLib/URLShorteners/CustomURLShortener.cs
@@ -85,7 +85,14 @@ public override UploadResult ShortenURL(string url)
 
             Dictionary<string, string> args = customUploader.GetArguments(url);
 
-            result.Response = SendRequest(customUploader.GetHttpMethod(), customUploader.GetRequestURL(), args, customUploader.GetHeaders(), responseType: customUploader.ResponseType);
+            if (customUploader.RequestType == CustomUploaderRequestType.POST)
+            {
+                result.Response = SendRequestMultiPart(customUploader.GetRequestURL(), args, customUploader.GetHeaders(), responseType: customUploader.ResponseType);
+            }
+            else
+            {
+                result.Response = SendRequest(customUploader.GetHttpMethod(), customUploader.GetRequestURL(), args, customUploader.GetHeaders(), responseType: customUploader.ResponseType);
+            }
 
             try
             {