diff --git a/source/games/sw/src/game.h b/source/games/sw/src/game.h
index 6853ef493..ec2193112 100644
--- a/source/games/sw/src/game.h
+++ b/source/games/sw/src/game.h
@@ -622,7 +622,7 @@ struct PLAYER
 
     int jump_count, jump_speed;     // jumping
     int16_t down_speed, up_speed; // diving
-    int z_speed,oz_speed; // used for diving and flying instead of down_speed, up_speed
+    int z_speed; // used for diving and flying instead of down_speed, up_speed
     int climb_ndx;
     int hiz,loz;
     int ceiling_dist,floor_dist;
diff --git a/source/games/sw/src/player.cpp b/source/games/sw/src/player.cpp
index 2094b782a..51abbbaef 100644
--- a/source/games/sw/src/player.cpp
+++ b/source/games/sw/src/player.cpp
@@ -7044,7 +7044,6 @@ DEFINE_FIELD_X(SWPlayer, PLAYER, jump_speed)
 DEFINE_FIELD_X(SWPlayer, PLAYER, down_speed)
 DEFINE_FIELD_X(SWPlayer, PLAYER, up_speed)
 DEFINE_FIELD_X(SWPlayer, PLAYER, z_speed)
-DEFINE_FIELD_X(SWPlayer, PLAYER, oz_speed)
 DEFINE_FIELD_X(SWPlayer, PLAYER, climb_ndx)
 DEFINE_FIELD_X(SWPlayer, PLAYER, hiz)
 DEFINE_FIELD_X(SWPlayer, PLAYER, loz)
diff --git a/source/games/sw/src/save.cpp b/source/games/sw/src/save.cpp
index 4da461949..b6399f176 100644
--- a/source/games/sw/src/save.cpp
+++ b/source/games/sw/src/save.cpp
@@ -581,7 +581,6 @@ FSerializer& Serialize(FSerializer& arc, const char* keyname, PLAYER& w, PLAYER*
 	if (arc.isReading())
 	{
 		w.opos = w.pos;
-		w.oz_speed = w.z_speed;
 		w.ovect.X = w.vect.X;
 		w.ovect.Y = w.vect.Y;
 		w.obob_z = w.bob_z;
diff --git a/wadsrc/static/zscript/games/sw/swgame.zs b/wadsrc/static/zscript/games/sw/swgame.zs
index 990983b21..a3a526ddd 100644
--- a/wadsrc/static/zscript/games/sw/swgame.zs
+++ b/wadsrc/static/zscript/games/sw/swgame.zs
@@ -189,7 +189,7 @@ struct SWPlayer native
 
     native int jump_count, jump_speed;     // jumping
     native int16 down_speed, up_speed; // diving
-    native int z_speed,oz_speed; // used for diving and flying instead of down_speed, up_speed
+    native int z_speed; // used for diving and flying instead of down_speed, up_speed
     native int climb_ndx;
     native int hiz,loz;
     native int ceiling_dist,floor_dist;