diff --git a/src/p_map.cpp b/src/p_map.cpp
index 517327843..e90d24bed 100644
--- a/src/p_map.cpp
+++ b/src/p_map.cpp
@@ -6707,10 +6707,8 @@ void P_UnlinkRenderSectors(AActor* thing)
 	{
 		if (thing->touching_render_sectors)
 		{
-			for (std::forward_list<sector_t*>::iterator it = thing->touching_render_sectors->begin();
-				it != thing->touching_render_sectors->end(); it++)
+			for (auto sec : *thing->touching_render_sectors)
 			{
-				sector_t* sec = (*it);
 				if (sec->touching_render_things)
 				{
 					sec->touching_render_things->remove(thing);
diff --git a/src/r_things.cpp b/src/r_things.cpp
index 77f45188c..4cf056aed 100644
--- a/src/r_things.cpp
+++ b/src/r_things.cpp
@@ -1234,10 +1234,8 @@ void R_AddSprites (sector_t *sec, int lightlevel, int fakeside)
 	spriteshade = LIGHT2SHADE(lightlevel + r_actualextralight);
 
 	// Handle all things in sector.
-	for (std::forward_list<AActor*>::iterator it = sec->touching_render_things->begin();
-		 it != sec->touching_render_things->end(); it++)
+	for (auto thing : *sec->touching_render_things)
 	{
-		thing = (*it);
 		if (thing->validcount == validcount) continue;
 		thing->validcount = validcount;