diff --git a/theme/puzzle.css b/theme/puzzle.css
index 8be5a54..0b004f0 100644
--- a/theme/puzzle.css
+++ b/theme/puzzle.css
@@ -32,7 +32,7 @@
 }
 
 .output, .editor {
-    font-family: Go, monospace;
+    font-family: Go, "source code pro", consolas, monospace;
 }
 
 .fixed .output, .fixed .editor {