diff --git a/wadsrc/static/zscript/shared/dynlights.txt b/wadsrc/static/zscript/shared/dynlights.txt
index 5783541307..f851d88d09 100644
--- a/wadsrc/static/zscript/shared/dynlights.txt
+++ b/wadsrc/static/zscript/shared/dynlights.txt
@@ -5,6 +5,7 @@ class DynamicLight : Actor native
 		Height 0;
 		Radius 0.1;
 		FloatBobPhase 0;
+		RenderRadius -1;
 		+NOBLOCKMAP
 		+NOGRAVITY
 		+FIXMAPTHINGPOS