diff --git a/src/services/SPService.ts b/src/services/SPService.ts
index ac193bd43..85d555aae 100644
--- a/src/services/SPService.ts
+++ b/src/services/SPService.ts
@@ -247,7 +247,9 @@ export default class SPService implements ISPService {
   public async addAttachment(listId: string, itemId: number, fileName: string, file: File, webUrl?: string): Promise<void> {
     try {
       // Remove special characters in FileName
-      fileName = fileName.replace(/[^\.\w\s\&\-]/gi, '');
+      //Updating the escape characters for filename as per the doucmentations 
+      //https://support.microsoft.com/en-us/kb/905231
+      fileName = fileName.replace(/[\~\#\%\&\*\{\}\\\:\<\>\?\/\+\|]/gi, '');
       // Check if attachment exists
       const fileExists = await this.checkAttachmentExists(listId, itemId, fileName, webUrl);
       // Delete attachment if it exists