diff --git a/bin/get-bugzilla-attachments-by-mimetype b/bin/get-bugzilla-attachments-by-mimetype
index 93bd5a7f503f..4c384de7fc07 100755
--- a/bin/get-bugzilla-attachments-by-mimetype
+++ b/bin/get-bugzilla-attachments-by-mimetype
@@ -418,7 +418,7 @@ mimetypes = {
     'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet': 'xlsx',
     'application/vnd.openxmlformats-officedocument.spreadsheetml.template': 'xltx',
     'application/vnd.openxmlformats-officedocument.presentationml.presentation': 'pptx',
-    'application/vnd.openxmlformats-officedocument.presentationml.template': 'ppotx',
+    'application/vnd.openxmlformats-officedocument.presentationml.template': 'potx',
     'application/vnd.openxmlformats-officedocument.presentationml.slideshow': 'ppsx',
     'application/vnd.openxmlformats-officedocument.presentationml.slide': 'sldx',
     'application/vnd.openxmlformats-officedocument.wordprocessingml.document': 'docx',