diff --git a/addons/csw/functions/fnc_compatibleMagazines.sqf b/addons/csw/functions/fnc_compatibleMagazines.sqf
index ce5afe8a51..ddc9c67b09 100644
--- a/addons/csw/functions/fnc_compatibleMagazines.sqf
+++ b/addons/csw/functions/fnc_compatibleMagazines.sqf
@@ -23,7 +23,7 @@ if !((typeOf _csw) in GVAR(initializedStaticTypes)) exitWith {createHashMap};
 
 // fast exit for csw with single weapon, most common scenario
 if (count allTurrets _csw isEqualTo 1 && {count weapons _csw isEqualTo 1}) exitWith {
-    +(GVAR(compatibleMagsCache) get ((weapons _csw) select 0)) // return
+    +(GVAR(compatibleMagsCache) getOrDefault [(weapons _csw) select 0, createHashMap]) // return
 };
 
 private _weapons = [];