diff --git a/src/hardware/hw_main.c b/src/hardware/hw_main.c
index db4fb53c8..e0548e50d 100644
--- a/src/hardware/hw_main.c
+++ b/src/hardware/hw_main.c
@@ -1532,7 +1532,7 @@ static void HWR_ProcessSeg(void) // Sort of like GLWall::Process in GZDoom
 				wallVerts[3].t += (gl_frontsector->ceilingheight - worldtop) * yscale * grTex->scaleY;
 				wallVerts[2].t += (gl_frontsector->ceilingheight - worldtopslope) * yscale * grTex->scaleY;
 				wallVerts[0].t += (gl_frontsector->floorheight - worldbottom) * yscale * grTex->scaleY;
-				wallVerts[1].t += (gl_frontsector->floorheight - worldbottomslope) * yscale * yscale;
+				wallVerts[1].t += (gl_frontsector->floorheight - worldbottomslope) * yscale * grTex->scaleY;
 			} else if (gl_linedef->flags & ML_DONTPEGBOTTOM) {
 				wallVerts[3].t = wallVerts[0].t + ((worldbottom - worldtop) * yscale) * grTex->scaleY;
 				wallVerts[2].t = wallVerts[1].t + ((worldbottomslope - worldtopslope) * yscale) * grTex->scaleY;