diff --git a/panda/src/rocket/rocketInputHandler.cxx b/panda/src/rocket/rocketInputHandler.cxx
index 387ce9d2d0..c77143f70e 100644
--- a/panda/src/rocket/rocketInputHandler.cxx
+++ b/panda/src/rocket/rocketInputHandler.cxx
@@ -242,7 +242,7 @@ do_transmit_data(DataGraphTraverser *trav, const DataNodeTransmit &input,
 
       case ButtonEvent::T_keystroke:
         // Ignore control characters; otherwise, they actually get added to strings in the UI.
-        if (be._keycode > 0x1F and (be._keycode < 0x7F or be._keycode > 0x9F)) {
+        if (be._keycode > 0x1F && (be._keycode < 0x7F || be._keycode > 0x9F)) {
           _text_input.push_back(be._keycode);
         }
         break;