diff --git a/addons/zeus/functions/fnc_moduleKnockout.sqf b/addons/zeus/functions/fnc_moduleKnockout.sqf
index 2c26c79c73..5f416cb771 100644
--- a/addons/zeus/functions/fnc_moduleKnockout.sqf
+++ b/addons/zeus/functions/fnc_moduleKnockout.sqf
@@ -28,10 +28,10 @@ if (isNil QEFUNC(medical,setUnconscious)) then {
 	if (isNull _unit) then {
 		["Place on a unit"] call DEFUNC(common,displayTextStructured);
 	} else {
-		if (!_unit isKindOf "CAManBase") then {
+		if !(_unit isKindOf "CAManBase") then {
 			["Unit must be infantry"] call DEFUNC(common,displayTextStructured);
 		} else {
-			if (!alive _unit) then {
+			if !(alive _unit) then {
 				["Unit must be alive"] call DEFUNC(common,displayTextStructured);
 			} else {
 				_conscious = GETVAR(_unit,ACE_isUnconscious,false);
diff --git a/addons/zeus/functions/fnc_moduleSurrender.sqf b/addons/zeus/functions/fnc_moduleSurrender.sqf
index cfcfecb675..fea0ed6e07 100644
--- a/addons/zeus/functions/fnc_moduleSurrender.sqf
+++ b/addons/zeus/functions/fnc_moduleSurrender.sqf
@@ -28,10 +28,10 @@ if (isNil QEFUNC(captives,setSurrendered)) then {
 	if (isNull _unit) then {
 		["Place on a unit"] call DEFUNC(common,displayTextStructured);
 	} else {
-		if (!_unit isKindOf "CAManBase") then {
+		if !(_unit isKindOf "CAManBase") then {
 			["Unit must be infantry"] call DEFUNC(common,displayTextStructured);
 		} else {
-			if (!alive _unit) then {
+			if !(alive _unit) then {
 				["Unit must be alive"] call DEFUNC(common,displayTextStructured);
 			} else {
 				_surrendering = GETVAR(_unit,EGVAR(captives,isSurrendering),false);