diff --git a/main.js b/main.js
index 3e6c51f..aa7e6a2 100644
--- a/main.js
+++ b/main.js
@@ -321,7 +321,7 @@ ipcMain.handle('begin-mapping', async (event, { directory, files, tvdbId }) => {
           const startEpNum = String(episodeStart).padStart(2, '0');
           const endEpNum = String(episodeEnd).padStart(2, '0');
           
-          let newFileName = `${showName} S${seasonNum}E${startEpNum}-${endEpNum}`;
+          let newFileName = `${showName} S${seasonNum}E${startEpNum}-E${endEpNum}`;
           if (file.quality && file.quality !== 'N/A' && file.quality !== '-') {
             newFileName += ` - ${file.quality}`;
           }