diff --git a/src/p_setup.cpp b/src/p_setup.cpp
index 89ca3a799..b88e3e2a0 100644
--- a/src/p_setup.cpp
+++ b/src/p_setup.cpp
@@ -1320,19 +1320,15 @@ void P_LoadSegs (MapData * map)
 			if (delta_angle >= 1.)
 			{
 				double dis = (li->v2->fPos() - li->v1->fPos()).Length();
-				DVector2 delta = seg_angle.ToVector();
+				DVector2 delta = seg_angle.ToVector(dis);
 				if ((vnum2 > vnum1) && (vertchanged[vnum2] == 0))
 				{
-					li->v2->set(
-						li->v1->fX() + dis * delta.X,
-						li->v1->fY() + dis * delta.Y);
+					li->v2->set(li->v1->fPos() + delta);
 					vertchanged[vnum2] = 1; // this was changed
 				}
 				else if (vertchanged[vnum1] == 0)
 				{
-					li->v1->set(
-						li->v2->fX() - dis * delta.X,
-						li->v2->fY() - dis * delta.Y);
+					li->v1->set(li->v2->fPos() - delta);
 					vertchanged[vnum1] = 1; // this was changed
 				}
 			}
diff --git a/src/r_defs.h b/src/r_defs.h
index 2719ff7ee..6b2aa79a3 100644
--- a/src/r_defs.h
+++ b/src/r_defs.h
@@ -118,6 +118,11 @@ public:
 		p.Y = y;
 	}
 
+	void set(const DVector2 &pos)
+	{
+		p = pos;
+	}
+
 	double fX() const
 	{
 		return p.X;