diff --git a/source/games/duke/src/actors.cpp b/source/games/duke/src/actors.cpp
index a7643a164..735a20644 100644
--- a/source/games/duke/src/actors.cpp
+++ b/source/games/duke/src/actors.cpp
@@ -3049,7 +3049,7 @@ void handle_se17(DDukeActor* actor)
 				ps[p].PlayerOldPosition -= ps[p].posGet();
 				ps[p].posXY() += act2->spr.pos.XY() - actor->spr.pos.XY();
 				ps[p].posZadd(act2->sector()->floorz - sc->floorz);
-				ps[p].PlayerOldPosition += ps[p].posGet();
+				ps[p].posoldAdd(ps[p].posGet());
 
 				if (q > 0) ps[p].backupz();
 
diff --git a/source/games/duke/src/types.h b/source/games/duke/src/types.h
index ae595b131..378b98e07 100644
--- a/source/games/duke/src/types.h
+++ b/source/games/duke/src/types.h
@@ -422,6 +422,11 @@ struct player_struct
 	{
 		return PlayerOldPosition.Z;
 	}
+
+	void posoldAdd(const DVector3& val)
+	{
+		PlayerOldPosition += val;
+	}
 };
 
 struct Cycler