diff --git a/kallithea/public/less/style.less b/kallithea/public/less/style.less
--- a/kallithea/public/less/style.less
+++ b/kallithea/public/less/style.less
@@ -194,6 +194,7 @@ table.changesets {
 
 /* textareas should be at least 100px high and 400px wide */
 textarea.form-control {
+  font-family: @font-family-monospace;
   min-height: 100px;
   min-width: 400px;
 }