diff --git a/src/bytecode.go b/src/bytecode.go
index 40dea5c2..02834baa 100644
--- a/src/bytecode.go
+++ b/src/bytecode.go
@@ -1791,7 +1791,7 @@ func (be BytecodeExp) run(c *Char) BytecodeValue {
 		case OC_pos_x:
 			sys.bcStack.PushF((c.pos[0]*(c.localscl/oc.localscl) - sys.cam.Pos[0]/oc.localscl))
 		case OC_pos_y:
-			sys.bcStack.PushF((c.pos[1] + c.groundLevel - c.platformPosY) * (c.localscl / oc.localscl))
+			sys.bcStack.PushF((c.pos[1] - c.groundLevel - c.platformPosY) * (c.localscl / oc.localscl))
 		case OC_power:
 			sys.bcStack.PushI(c.getPower())
 		case OC_powermax:
diff --git a/src/stage.go b/src/stage.go
index 34100fad..2973cbae 100644
--- a/src/stage.go
+++ b/src/stage.go
@@ -403,7 +403,7 @@ func (bg backGround) draw(pos [2]float32, drawscl, bgscl, stglscl float32,
 	y := bg.start[1] - yScrollPos + bg.bga.offset[1]
 
 	// Calculate Y scaling based on vertical scroll position and delta
-	ys2 := bg.scaledelta[1] * pos[1] * bg.delta[1] * bgscl
+	ys2 := bg.scaledelta[1] * pos[1] * bg.delta[1] * bgscl / drawscl
 	ys := ((100-(pos[1])*bg.yscaledelta)*bgscl/bg.yscalestart)*bg.scalestart[1] + ys2
 	xs := bg.scaledelta[0] * pos[0] * bg.delta[0] * bgscl
 	x *= bgscl