diff --git a/boards/forms.py b/boards/forms.py
--- a/boards/forms.py
+++ b/boards/forms.py
@@ -54,6 +54,7 @@ MIMETYPE_EXTENSIONS = {
     'video/webm': 'webm',
     'application/pdf': 'pdf',
     'x-diff': 'diff',
+    'image/svg+xml': 'svg',
 }