diff --git a/src/p_usdf.cpp b/src/p_usdf.cpp
index e8ce5ca500..a64dc932fe 100644
--- a/src/p_usdf.cpp
+++ b/src/p_usdf.cpp
@@ -210,19 +210,16 @@ class USDFParser : public UDMFParserBase
 			{
 				switch(key)
 				{
+				case NAME_Cost:
 				case NAME_Require:
 				case NAME_Exclude:
-					// Print a warning if the namespace is not ZDoom otherwise fall-through. [FishyClockwork]
-					if (namespace_bits != Zd)
+					// Require and Exclude are exclusive to namespace ZDoom. [FishyClockwork]
+					if (key == NAME_Cost || namespace_bits == Zd)
 					{
-						sc.ScriptMessage("Detected \"%s\" block, ignoring. Require/Exclude are exclusive to namespace ZDoom.", key == NAME_Require ? "Require" : "Exclude");
-						while (!sc.CheckToken('}')) sc.MustGetAnyToken(); // Skip this block
+						ParseCostRequireExclude(reply, key);
 						break;
 					}
-
-				case NAME_Cost:
-					ParseCostRequireExclude(reply, key);
-					break;
+					// Intentional fall-through
 
 				default:
 					sc.UnGet();