diff --git a/4chan_x.coffee b/4chan_x.coffee
index 4597f37ea..768cb2261 100644
--- a/4chan_x.coffee
+++ b/4chan_x.coffee
@@ -371,6 +371,7 @@ keyAct = (e) ->
     # [0-9;=A-Z]
     unless 48 <= kc <= 90
         return
+    if e.ctrlKey or e.altKey then return
     e.preventDefault()
     char = String.fromCharCode kc
     hash = location.hash
diff --git a/4chan_x.js b/4chan_x.js
index 456e3f296..0f3952d7c 100644
--- a/4chan_x.js
+++ b/4chan_x.js
@@ -457,6 +457,9 @@
     if (!((48 <= kc) && (kc <= 90))) {
       return null;
     }
+    if (e.ctrlKey || e.altKey) {
+      return null;
+    }
     e.preventDefault();
     char = String.fromCharCode(kc);
     hash = location.hash;