diff --git a/src/scripting/zscript/zcc_parser.cpp b/src/scripting/zscript/zcc_parser.cpp
index 5ddc9207da..9093b7b516 100644
--- a/src/scripting/zscript/zcc_parser.cpp
+++ b/src/scripting/zscript/zcc_parser.cpp
@@ -443,7 +443,7 @@ static void DoParse(int lumpnum)
 	// If the parser fails, there is no point starting the compiler, because it'd only flood the output with endless errors.
 	if (FScriptPosition::ErrorCounter > 0)
 	{
-		I_Error("%d errors while parsing %s", FScriptPosition::ErrorCounter, Wads.GetLumpFullPath(lumpnum).GetChars());
+		I_Error("%d errors while parsing %s", FScriptPosition::ErrorCounter, Wads.GetLumpFullPath(baselump).GetChars());
 	}
 
 #ifndef NDEBUG
@@ -457,7 +457,7 @@ static void DoParse(int lumpnum)
 	if (Args->CheckParm("-dumpast"))
 	{
 		FString ast = ZCC_PrintAST(state.TopNode);
-		FString filename = Wads.GetLumpFullPath(lumpnum);
+		FString filename = Wads.GetLumpFullPath(baselump);
 		filename.ReplaceChars(":\\/?|", '.');
 		filename << ".ast";
 		FileWriter *ff = FileWriter::Open(filename);
@@ -469,19 +469,19 @@ static void DoParse(int lumpnum)
 	}
 
 	PSymbolTable symtable;
-	auto newns = Wads.GetLumpFile(lumpnum) == 0 ? Namespaces.GlobalNamespace : Namespaces.NewNamespace(Wads.GetLumpFile(lumpnum));
-	ZCCCompiler cc(state, NULL, symtable, newns, lumpnum, state.ParseVersion);
+	auto newns = Wads.GetLumpFile(baselump) == 0 ? Namespaces.GlobalNamespace : Namespaces.NewNamespace(Wads.GetLumpFile(baselump));
+	ZCCCompiler cc(state, NULL, symtable, newns, baselump, state.ParseVersion);
 	cc.Compile();
 
 	if (FScriptPosition::ErrorCounter > 0)
 	{
 		// Abort if the compiler produced any errors. Also do not compile further lumps, because they very likely miss some stuff.
-		I_Error("%d errors, %d warnings while compiling %s", FScriptPosition::ErrorCounter, FScriptPosition::WarnCounter, Wads.GetLumpFullPath(lumpnum).GetChars());
+		I_Error("%d errors, %d warnings while compiling %s", FScriptPosition::ErrorCounter, FScriptPosition::WarnCounter, Wads.GetLumpFullPath(baselump).GetChars());
 	}
 	else if (FScriptPosition::WarnCounter > 0)
 	{
 		// If we got warnings, but no errors, print the information but continue.
-		Printf(TEXTCOLOR_ORANGE "%d warnings while compiling %s\n", FScriptPosition::WarnCounter, Wads.GetLumpFullPath(lumpnum).GetChars());
+		Printf(TEXTCOLOR_ORANGE "%d warnings while compiling %s\n", FScriptPosition::WarnCounter, Wads.GetLumpFullPath(baselump).GetChars());
 	}
 
 }