diff --git a/src/playsim/a_dynlight.cpp b/src/playsim/a_dynlight.cpp
index c7eae0f18..1f7786543 100644
--- a/src/playsim/a_dynlight.cpp
+++ b/src/playsim/a_dynlight.cpp
@@ -671,7 +671,7 @@ void FDynamicLight::UnlinkLight()
 		auto sidedef = touchlists.wall_tlist[i];
 		if (!sidedef) continue;
 		
-		if(Level->lightlists.wall_dlist.SSize() < sidedef->Index())
+		if(Level->lightlists.wall_dlist.SSize() > sidedef->Index())
 		{
 			Level->lightlists.wall_dlist[sidedef->Index()].Remove(this);
 		}
@@ -682,7 +682,7 @@ void FDynamicLight::UnlinkLight()
 		auto sec = touchlists.flat_tlist[i];
 		if (!sec) continue;
 
-		if(Level->lightlists.flat_dlist.SSize() < sec->Index())
+		if(Level->lightlists.flat_dlist.SSize() > sec->Index())
 		{
 			Level->lightlists.flat_dlist[sec->Index()].Remove(this);
 		}