diff --git a/Reader/read.css b/Reader/read.css
index c5ba103..35c562f 100644
--- a/Reader/read.css
+++ b/Reader/read.css
@@ -37,7 +37,8 @@ figcaption {
 }
 
 pre, code {
-    font-family: ui-monospace;
+    /* ui-monospace doesn't work for some reason, even though the other ui- fonts do */
+    font-family: ui-monospace, "SF Mono";
 }
 
 pre {