diff --git a/src/common/rendering/hwrenderer/data/hw_cvars.h b/src/common/rendering/hwrenderer/data/hw_cvars.h
index 38c36c57e..a45da7aee 100644
--- a/src/common/rendering/hwrenderer/data/hw_cvars.h
+++ b/src/common/rendering/hwrenderer/data/hw_cvars.h
@@ -69,3 +69,6 @@ EXTERN_CVAR(Bool, gl_fakemodellight)
 EXTERN_CVAR(Float, gl_fakemodellightintensity)
 
 
+
+EXTERN_CVAR(Bool, lm_dynlights)
+
diff --git a/src/rendering/hwrenderer/scene/hw_drawinfo.h b/src/rendering/hwrenderer/scene/hw_drawinfo.h
index 94f6562ca..c4797c67a 100644
--- a/src/rendering/hwrenderer/scene/hw_drawinfo.h
+++ b/src/rendering/hwrenderer/scene/hw_drawinfo.h
@@ -297,7 +297,7 @@ public:
 				if (tile->Binding.Type == ST_UPPERSIDE || tile->Binding.Type == ST_MIDDLESIDE || tile->Binding.Type == ST_LOWERSIDE)
 				{
 					sector_t* sector = Level->sides[tile->Binding.TypeIndex].sector;
-					if (sector && sector->Flags & SECF_LM_DYNAMIC)
+					if (sector && (sector->Flags & SECF_LM_DYNAMIC || lm_dynlights))
 					{
 						VisibleTiles.ReceivedNewLight.Push(tile);
 					}
@@ -305,7 +305,7 @@ public:
 				else if (tile->Binding.Type == ST_CEILING || tile->Binding.Type == ST_FLOOR)
 				{
 					sector_t* sector = Level->subsectors[tile->Binding.TypeIndex].sector;
-					if (sector && sector->Flags & SECF_LM_DYNAMIC)
+					if (sector && (sector->Flags & SECF_LM_DYNAMIC || lm_dynlights))
 					{
 						VisibleTiles.ReceivedNewLight.Push(tile);
 					}