diff --git a/fgd/bases/BaseClusteredDynLight.fgd b/fgd/bases/BaseClusteredDynLight.fgd
index 4f063ed3..d6399b37 100644
--- a/fgd/bases/BaseClusteredDynLight.fgd
+++ b/fgd/bases/BaseClusteredDynLight.fgd
@@ -22,6 +22,7 @@
 		0: "None"
 		1: "Static Only"
 		]
+	slopescale(float) : "Slope Scale" : 1.0 : "Shadowmap slope scale. Higher values tend to eat away at the contact shadow, but can get rid of shadow acne. Higher values will also tend to shine through small shadow blockers"
 		
 	texturename(string) : "Cookie Texture Name" : "" : "The cookie texture to use for the light. An empty value means no cookie texture."
 	textureframe(integer) : "Cookie Texture Frame" : 0 : "The frame of the cookie texture to use for the light."