diff --git a/Build/Configurations/Includes/SRB222_common.cfg b/Build/Configurations/Includes/SRB222_common.cfg
index b4e6e4a0..e8d9b98e 100644
--- a/Build/Configurations/Includes/SRB222_common.cfg
+++ b/Build/Configurations/Includes/SRB222_common.cfg
@@ -229,6 +229,8 @@ mapformat_udmf
 	linetagindicatesectors = false;
 	localsidedeftextureoffsets = false;
 	distinctfloorandceilingbrightness = true;
+	
+	planeequationsupport = true;
 
 	// Special linedefs
 	include("SRB222_misc.cfg", "speciallinedefs_udmf");