Index: ps/trunk/binaries/data/mods/public/gui/common/hotkeys.js
===================================================================
--- ps/trunk/binaries/data/mods/public/gui/common/hotkeys.js
+++ ps/trunk/binaries/data/mods/public/gui/common/hotkeys.js
@@ -27,6 +27,9 @@
 
 function formatHotkeyCombinations(combinations, translateScancodes = true)
 {
+	if (!combinations || !combinations.length)
+		return "";
+
 	let combs = combinations.map(x => formatHotkeyCombination(x, translateScancodes));
 	combs.sort((a, b) => a.length - b.length || a - b);
 	return translateScancodes ? combs.join(", ") : combs;