diff --git a/addons/frag/functions/fnc_dev_addRound.sqf b/addons/frag/functions/fnc_dev_addRound.sqf
index 498f6ffad5..a1cc372bb7 100644
--- a/addons/frag/functions/fnc_dev_addRound.sqf
+++ b/addons/frag/functions/fnc_dev_addRound.sqf
@@ -37,17 +37,22 @@ if (_isSidePlayer) then {
 [
     {
         if (isGamePaused) exitWith {};
-        params ["_params", "_handle"];
-        _params params ["_projectile"];
+        params ["_projectile", "_handle"];
+        
         if (!alive _projectile) exitWith {
             [_handle] call CBA_fnc_removePerFrameHandler;
         };
-        private _projectileArray = GVAR(dev_trackLines) getOrDefault [getObjectID _projectile, -1];
-        if (_projectileArray isEqualType 0) exitWith {};
+        
+        private _projectileArray = GVAR(dev_trackLines) get (getObjectID _projectile);
+        
+        if (isNil "_projectileArray") exitWith {
+            [_handle] call CBA_fnc_removePerFrameHandler;
+        };
+        
         (_projectileArray#0) pushBack getPosATL _projectile;
     },
     0,
-    [_projectile]
+    _projectile
 ] call CBA_fnc_addPerFrameHandler;
 
 if (!_addProjectileEventHandlers) exitWith {};