diff --git a/ShareX.UploadersLib/Forms/UploadersConfigForm.cs b/ShareX.UploadersLib/Forms/UploadersConfigForm.cs
index 4be713e4f..23495b7ca 100644
--- a/ShareX.UploadersLib/Forms/UploadersConfigForm.cs
+++ b/ShareX.UploadersLib/Forms/UploadersConfigForm.cs
@@ -3398,7 +3398,28 @@ private void btnCustomUploaderClearUploaders_Click(object sender, EventArgs e)
 
         private object eiCustomUploaders_ExportRequested()
         {
-            return CustomUploaderGetSelected();
+            CustomUploaderItem uploader = CustomUploaderGetSelected();
+
+            if (uploader != null)
+            {
+                if (string.IsNullOrEmpty(uploader.RequestURL))
+                {
+                    // TODO: Translate
+                    MessageBox.Show("\"Request URL\" must be configured.", "ShareX - " + Resources.UploadersConfigForm_Error,
+                        MessageBoxButtons.OK, MessageBoxIcon.Error);
+                    return null;
+                }
+
+                if (uploader.DestinationType == CustomUploaderDestinationType.None)
+                {
+                    // TODO: Translate
+                    MessageBox.Show("\"Destination type\" must be configured.", "ShareX - " + Resources.UploadersConfigForm_Error,
+                        MessageBoxButtons.OK, MessageBoxIcon.Error);
+                    return null;
+                }
+            }
+
+            return uploader;
         }
 
         private void eiCustomUploaders_ImportRequested(object obj)
diff --git a/ShareX.UploadersLib/Helpers/CustomUploaderItem.cs b/ShareX.UploadersLib/Helpers/CustomUploaderItem.cs
index 51fe3c45a..c90a8f629 100644
--- a/ShareX.UploadersLib/Helpers/CustomUploaderItem.cs
+++ b/ShareX.UploadersLib/Helpers/CustomUploaderItem.cs
@@ -132,7 +132,8 @@ public string GetRequestURL()
         {
             if (string.IsNullOrEmpty(RequestURL))
             {
-                throw new Exception("'Request URL' must be not empty.");
+                // TODO: Translate
+                throw new Exception("\"Request URL\" must be configured.");
             }
 
             string url = ParseURL(RequestURL, false);
@@ -144,7 +145,8 @@ public string GetFileFormName()
         {
             if (string.IsNullOrEmpty(FileFormName))
             {
-                throw new Exception("'File form name' must be not empty.");
+                // TODO: Translate
+                throw new Exception("\"File form name\" must be configured.");
             }
 
             return FileFormName;