diff --git a/sumorobot.js b/sumorobot.js
index ddf79f5..7e4551f 100755
--- a/sumorobot.js
+++ b/sumorobot.js
@@ -480,6 +480,8 @@ window.onload = function() {
             case 80: // p
                 $("#blocklyDiv").toggle();
                 $("#blocklyArea").toggle();
+                /* resize the Python code editor */
+                pythonEditor.resize();
                 /* disable / enable ace editor */
                 pythonEditor.setReadOnly(pythonEnabled);
                 /* toggle python enabled */