diff --git a/specs/udmf_zdoom.txt b/specs/udmf_zdoom.txt
index 7b849115e..10d357712 100644
--- a/specs/udmf_zdoom.txt
+++ b/specs/udmf_zdoom.txt
@@ -424,7 +424,7 @@ Note: All <bool> fields default to false unless mentioned otherwise.
 
       lm_sampledist = <int>;        // ZDRay lightmap sample distance for the entire map. Defines the map units each lightmap texel covers. Must be in powers of two. Default = 8
       lm_suncolor = <string>;       // ZDRay lightmap sun color in hex. Default = "FFFFFF"
-      sourceradius = <float>;       // ZDRay lightmap light soft shadow amount. Higher values produce softer shadows. Default = 5.0
+      SourceRadius = <float>;       // ZDRay lightmap light and raytraced dynamic light soft shadow amount. Higher values produce softer shadows. Default = 5.0
 
       friendlyseeblocks = <int>;    // How far (in block units) a friendly monster can see other monsters. Default 10
 
diff --git a/src/namedef_custom.h b/src/namedef_custom.h
index 2dcf08962..39bba8085 100644
--- a/src/namedef_custom.h
+++ b/src/namedef_custom.h
@@ -862,7 +862,6 @@ xx(lm_sampledist_floor)
 xx(lm_sampledist_ceiling)
 xx(lm_dynamic)
 xx(lm_suncolor)
-xx(sourceradius)
 
 // Light keywords
 xx(SourceRadius)