diff --git a/ctf/qwsrc/client.qc b/ctf/qwsrc/client.qc
index b1a68a5..dd8d43c 100644
--- a/ctf/qwsrc/client.qc
+++ b/ctf/qwsrc/client.qc
@@ -144,9 +144,9 @@ SetNewParms =
 void ()
 DecodeLevelParms =
 {
-	self.player_flag = self.player_flag | parm16;
-	self.player_flag = self.player_flag - (self.player_flag & ITEM_RUNE_MASK);
-	self.player_flag = self.player_flag - (self.player_flag & ITEM_ENEMY_FLAG);
+	self.player_flag |= parm16;
+	self.player_flag &= ~ITEM_RUNE_MASK;
+	self.player_flag &= ~ITEM_ENEMY_FLAG;
 	self.statstate = parm14;
 
 	if (gamestart) {
@@ -910,7 +910,7 @@ PlayerJump =
 	if (!(self.flags & FL_JUMPRELEASED))
 		return;		// don't pogo stick
 
-	self.flags = self.flags - (self.flags & FL_JUMPRELEASED);	
+	self.flags &= ~FL_JUMPRELEASED;
 	self.button2 = 0;
 
 	// player jumping sound
diff --git a/ctf/qwsrc/items.qc b/ctf/qwsrc/items.qc
index 769ede5..6ed189b 100644
--- a/ctf/qwsrc/items.qc
+++ b/ctf/qwsrc/items.qc
@@ -173,7 +173,7 @@ health_touch =
 
 	// Megahealth = rot down the player's super health
 	if (self.healtype == 2) {
-		other.items = other.items | IT_SUPERHEALTH;
+		other.items |= IT_SUPERHEALTH;
 		self.nextthink = time + 5;
 		self.think = item_megahealth_rot;
 		self.owner = other;
@@ -851,7 +851,7 @@ key_touch =
 
 	sound (other, CHAN_ITEM, self.noise, 1, ATTN_NORM);
 	stuffcmd (other, "bf\n");
-	other.items = other.items | self.items;
+	other.items |= self.items;
 
 	self.solid = SOLID_NOT;
 	self.model = string_null;
diff --git a/ctf/qwsrc/player.qc b/ctf/qwsrc/player.qc
index 94d5c24..affb848 100644
--- a/ctf/qwsrc/player.qc
+++ b/ctf/qwsrc/player.qc
@@ -572,7 +572,7 @@ ThrowHead =
 	setsize (self, '-16 -16 0', '16 16 56');
 	self.velocity = VelocityForDamage (dm);
 	self.origin_z = self.origin_z - 24;
-	self.flags = self.flags - (self.flags & FL_ONGROUND);
+	self.flags &= ~FL_ONGROUND;
 	self.avelocity = crandom() * '0 600 0';
 };
 
@@ -637,7 +637,7 @@ PlayerDie =
 	self.view_ofs = '0 0 -8';
 	self.deadflag = DEAD_DYING;
 	self.solid = SOLID_NOT;
-	self.flags = self.flags - (self.flags & FL_ONGROUND);
+	self.flags &= ~FL_ONGROUND;
 	self.movetype = MOVETYPE_TOSS;
 	if (self.velocity_z < 10)
 		self.velocity_z = self.velocity_z + random()*300;
diff --git a/ctf/qwsrc/teamplay.qc b/ctf/qwsrc/teamplay.qc
index 2792ba5..c776d54 100644
--- a/ctf/qwsrc/teamplay.qc
+++ b/ctf/qwsrc/teamplay.qc
@@ -472,8 +472,8 @@ TeamSkinAssign =
 		self.ctfskinno = 3;
 	if (random () < 0.5)
 		self.ctfskinno++;
-	self.player_flag -= self.player_flag & 65280;
-	self.player_flag += self.ctfskinno * 256;
+	self.player_flag  &= ~65280;
+	self.player_flag |= self.ctfskinno * 256;
 
 	TeamSkinSet ();
 };
diff --git a/ctf/qwsrc/weapons.qc b/ctf/qwsrc/weapons.qc
index 315178b..ac17a7f 100644
--- a/ctf/qwsrc/weapons.qc
+++ b/ctf/qwsrc/weapons.qc
@@ -765,7 +765,7 @@ W_SetCurrentAmmo =
 		self.currentammo = self.ammo_rockets;
 		self.weaponmodel = "progs/v_rock.mdl";
 		self.weaponframe = 0;
-		self.items = self.items | IT_ROCKETS;
+		self.items |= IT_ROCKETS;
 		break;
 	case IT_ROCKET_LAUNCHER:
 		self.currentammo = self.ammo_rockets;
@@ -1123,7 +1123,7 @@ ServerflagsCommand =
 {
 	serverflags = serverflags * 2 + 1;
 	// ZOID:  Bug fix
-	serverflags = (serverflags & 15);
+	serverflags &= 15;
 };
 
 //ZOID:  Uhm, where am I?