diff --git a/src/gamedata/g_mapinfo.cpp b/src/gamedata/g_mapinfo.cpp
index 5757703d2..9e3b1a444 100644
--- a/src/gamedata/g_mapinfo.cpp
+++ b/src/gamedata/g_mapinfo.cpp
@@ -765,12 +765,30 @@ void FMapInfoParser::ParseCluster()
 			ParseAssign();
 			if (ParseLookupName(clusterinfo->EnterText))
 				clusterinfo->flags |= CLUSTER_LOOKUPENTERTEXT;
+			else
+			{
+				FStringf testlabel("CLUSTERENTER%d", clusterinfo->cluster);
+				if (GStrings.MatchDefaultString(testlabel, clusterinfo->EnterText))
+				{
+					clusterinfo->EnterText = testlabel;
+					clusterinfo->flags |= CLUSTER_LOOKUPENTERTEXT;
+				}
+			}
 		}
 		else if (sc.Compare("exittext"))
 		{
 			ParseAssign();
 			if (ParseLookupName(clusterinfo->ExitText))
 				clusterinfo->flags |= CLUSTER_LOOKUPEXITTEXT;
+			else
+			{
+				FStringf testlabel("CLUSTEREXIT%d", clusterinfo->cluster);
+				if (GStrings.MatchDefaultString(testlabel, clusterinfo->ExitText))
+				{
+					clusterinfo->ExitText = testlabel;
+					clusterinfo->flags |= CLUSTER_LOOKUPEXITTEXT;
+				}
+			}
 		}
 		else if (sc.Compare("music"))
 		{
@@ -1933,8 +1951,8 @@ level_info_t *FMapInfoParser::ParseMapHeader(level_info_t &defaultinfo)
 			// Workaround to allow localizazion of IWADs which do not have a string label here (e.g. HACX.WAD)
 			// This checks for a string labelled with the MapName and if that is identical to what got parsed here
 			// the string table entry will be used.
-			auto c = GStrings.GetLanguageString(levelinfo->MapName, FStringTable::default_table);
-			if (c && !strcmp(c, sc.String))
+
+			if (GStrings.MatchDefaultString(levelinfo->MapName, sc.String))
 			{
 				levelinfo->flags |= LEVEL_LOOKUPLEVELNAME;
 				levelinfo->LevelName = levelinfo->MapName;
diff --git a/src/gamedata/stringtable.cpp b/src/gamedata/stringtable.cpp
index 3505470c2..2e249a0f9 100644
--- a/src/gamedata/stringtable.cpp
+++ b/src/gamedata/stringtable.cpp
@@ -250,6 +250,10 @@ bool FStringTable::ParseLanguageCSV(const TArray<uint8_t> &buffer)
 				{
 					InsertString(langentry.second, strName, str);
 				}
+				else
+				{
+					DeleteString(langentry.second, strName);
+				}
 			}
 		}
 	}
@@ -372,6 +376,17 @@ void FStringTable::LoadLanguage (const TArray<uint8_t> &buffer)
 //
 //==========================================================================
 
+void FStringTable::DeleteString(int langid, FName label)
+{
+	allStrings[langid].Remove(label);
+}
+
+//==========================================================================
+//
+//
+//
+//==========================================================================
+
 void FStringTable::InsertString(int langid, FName label, const FString &string)
 {
 	const char *strlangid = (const char *)&langid;
@@ -386,7 +401,7 @@ void FStringTable::InsertString(int langid, FName label, const FString &string)
 			break;
 		}
 		FString macroname(te.strings[0].GetChars() + index + 2, endindex - index - 2);
- 		FStringf lookupstr("%s/%s", strlangid, macroname.GetChars());
+		FStringf lookupstr("%s/%s", strlangid, macroname.GetChars());
 		FStringf replacee("@[%s]", macroname.GetChars());
 		FName lookupname(lookupstr, true);
 		auto replace = allMacros.CheckKey(lookupname);
@@ -550,6 +565,20 @@ const char *FStringTable::GetLanguageString(const char *name, uint32_t langtable
 	return nullptr;
 }
 
+bool FStringTable::MatchDefaultString(const char *name, const char *content) const
+{
+	// This only compares the first line to avoid problems with bad linefeeds. For the few cases where this feature is needed it is sufficient.
+	auto c = GetLanguageString(name, FStringTable::default_table);
+	if (!c) return false;
+	
+	// Check a secondary key, in case the text comparison cannot be done due to needed orthographic fixes (see Harmony's exit text)
+	FStringf checkkey("%s_CHECK", name);
+	auto cc = GetLanguageString(checkkey, FStringTable::default_table);
+	if (cc) c = cc;
+
+	return (c && !strnicmp(c, content, strcspn(content, "\n\r\t")));
+}
+
 //==========================================================================
 //
 // Finds a string by name and returns its value. If the string does
diff --git a/src/gamedata/stringtable.h b/src/gamedata/stringtable.h
index f4fcfa09f..e96d29c58 100644
--- a/src/gamedata/stringtable.h
+++ b/src/gamedata/stringtable.h
@@ -89,6 +89,7 @@ public:
 	}
 	
 	const char *GetLanguageString(const char *name, uint32_t langtable, int gender = -1) const;
+	bool MatchDefaultString(const char *name, const char *content) const;
 	const char *GetString(const char *name, uint32_t *langtable, int gender = -1) const;
 	const char *operator() (const char *name) const;	// Never returns NULL
 	const char *operator[] (const char *name) const
@@ -110,6 +111,7 @@ private:
 	bool LoadLanguageFromSpreadsheet(int lumpnum, const TArray<uint8_t> &buffer);
 	bool readMacros(int lumpnum);
 	void InsertString(int langid, FName label, const FString &string);
+	void DeleteString(int langid, FName label);
 
 	static size_t ProcessEscapes (char *str);
 };