diff --git a/addons/overpressure/functions/fnc_firedEHBB.sqf b/addons/overpressure/functions/fnc_firedEHBB.sqf
index 2d1d0f783c..add6468472 100644
--- a/addons/overpressure/functions/fnc_firedEHBB.sqf
+++ b/addons/overpressure/functions/fnc_firedEHBB.sqf
@@ -20,7 +20,7 @@ TRACE_10("firedEH:",_unit, _weapon, _muzzle, _mode, _ammo, _magazine, _projectil
 
 // Bake variable name and check if the variable exists, call the caching function otherwise
 private _varName = format [QGVAR(values%1%2%3), _weapon, _ammo, _magazine];
-private _var = if (isNil _varName) then {
+private _var = if (isNil "_varName") then {
     [_weapon, _ammo, _magazine] call FUNC(cacheOverPressureValues);
 } else {
     missionNameSpace getVariable _varName;
diff --git a/addons/overpressure/functions/fnc_firedEHOP.sqf b/addons/overpressure/functions/fnc_firedEHOP.sqf
index 5871fae9b8..95485f890d 100644
--- a/addons/overpressure/functions/fnc_firedEHOP.sqf
+++ b/addons/overpressure/functions/fnc_firedEHOP.sqf
@@ -20,7 +20,7 @@ TRACE_10("firedEH:",_unit, _weapon, _muzzle, _mode, _ammo, _magazine, _projectil
 
 // Bake variable name and check if the variable exists, call the caching function otherwise
 private _varName = format [QGVAR(values%1%2%3), _weapon, _ammo, _magazine];
-private _var = if (isNil _varName) then {
+private _var = if (isNil "_varName") then {
     [_weapon, _ammo, _magazine] call FUNC(cacheOverPressureValues);
 } else {
     missionNameSpace getVariable _varName;
diff --git a/addons/overpressure/functions/fnc_overpressureDamage.sqf b/addons/overpressure/functions/fnc_overpressureDamage.sqf
index 119c19ebb2..b2f01c0ddf 100644
--- a/addons/overpressure/functions/fnc_overpressureDamage.sqf
+++ b/addons/overpressure/functions/fnc_overpressureDamage.sqf
@@ -25,7 +25,7 @@ params ["_firer", "_posASL", "_direction", "_weapon", "_magazine", "_ammo"];
 
 // Bake variable name and check if the variable exists, call the caching function otherwise
 private _varName = format [QGVAR(values%1%2%3), _weapon, _ammo, _magazine];
-private _var = if (isNil _varName) then {
+private _var = if (isNil "_varName") then {
     [_weapon, _ammo, _magazine] call FUNC(cacheOverPressureValues);
 } else {
     missionNameSpace getVariable _varName;