diff --git a/main/endlevel.c b/main/endlevel.c
index 395555aa7..b8557186e 100644
--- a/main/endlevel.c
+++ b/main/endlevel.c
@@ -1157,6 +1157,10 @@ void do_endlevel_flythrough(int n)
 		//update target point & angles
 
 		compute_center_point_on_side(&dest_point,pseg,exit_side);
+		if (pseg->children[exit_side] == -2)
+			nextcenter = dest_point;
+		else
+			compute_segment_center(&nextcenter,&Segments[pseg->children[exit_side]]);
 
 		//update target point and movement points
 
@@ -1193,7 +1197,6 @@ void do_endlevel_flythrough(int n)
 		vm_vec_scale(&flydata->step,flydata->speed);
 
 		compute_segment_center(&curcenter,pseg);
-		compute_segment_center(&nextcenter,&Segments[pseg->children[exit_side]]);
 		vm_vec_sub(&flydata->headvec,&nextcenter,&curcenter);
 
 		#ifdef COMPACT_SEGS