diff --git a/source/games/duke/src/gameexec.cpp b/source/games/duke/src/gameexec.cpp
index a2a7aa7d0..47a56eea8 100644
--- a/source/games/duke/src/gameexec.cpp
+++ b/source/games/duke/src/gameexec.cpp
@@ -388,7 +388,7 @@ void DoPlayer(bool bSet, int lVar1, int lLabelID, int lVar2, DDukeActor* sActor,
 		break;
 
 	case PLAYER_OPOSZ:
-		if (bSet) ps[iPlayer].PlayerOldPosition.Z = lValue * zmaptoworld;
+		if (bSet) ps[iPlayer].posoldZset(lValue * zmaptoworld);
 		else SetGameVarID(lVar2, int(ps[iPlayer].PlayerOldPosition.Z * (1 / zmaptoworld)), sActor, sPlayer);
 		break;
 
diff --git a/source/games/duke/src/player.cpp b/source/games/duke/src/player.cpp
index 763a4f50b..2d02cea5e 100644
--- a/source/games/duke/src/player.cpp
+++ b/source/games/duke/src/player.cpp
@@ -774,7 +774,7 @@ void player_struct::backuppos(bool noclipping)
 		posY() = posoldY();
 	}
 
-	PlayerOldPosition.Z = posZget();
+	posoldZset(posZget());
 	bobpos = posXY();
 	opyoff = pyoff;
 }
diff --git a/source/games/duke/src/types.h b/source/games/duke/src/types.h
index 79ac53ae4..d6635169f 100644
--- a/source/games/duke/src/types.h
+++ b/source/games/duke/src/types.h
@@ -413,6 +413,11 @@ struct player_struct
 	{
 		return PlayerOldPosition.XY();
 	}
+
+	void posoldZset(const double val)
+	{
+		PlayerOldPosition.Z = val;
+	}
 };
 
 struct Cycler