diff --git a/src/newgrf.cpp b/src/newgrf.cpp
index 0cdeb61789..bb77635d83 100644
--- a/src/newgrf.cpp
+++ b/src/newgrf.cpp
@@ -5373,7 +5373,7 @@ static void GRFLoadError(ByteReader *buf)
 		if (buf->HasData()) {
 			const char *message = buf->ReadString();
 
-			error->custom_message = TranslateTTDPatchCodes(_cur_grffile->grfid, message);
+			error->custom_message = TranslateTTDPatchCodes(_cur_grffile->grfid, lang, message);
 		} else {
 			grfmsg(7, "GRFLoadError: No custom message supplied.");
 			error->custom_message = strdup("");
@@ -5385,7 +5385,7 @@ static void GRFLoadError(ByteReader *buf)
 	if (buf->HasData()) {
 		const char *data = buf->ReadString();
 
-		error->data = TranslateTTDPatchCodes(_cur_grffile->grfid, data);
+		error->data = TranslateTTDPatchCodes(_cur_grffile->grfid, lang, data);
 	} else {
 		grfmsg(7, "GRFLoadError: No message data supplied.");
 		error->data = strdup("");
@@ -5926,7 +5926,7 @@ static void FeatureTownName(ByteReader *buf)
 
 			const char *name = buf->ReadString();
 
-			char *lang_name = TranslateTTDPatchCodes(grfid, name);
+			char *lang_name = TranslateTTDPatchCodes(grfid, lang, name);
 			grfmsg(6, "FeatureTownName: lang 0x%X -> '%s'", lang, lang_name);
 			free(lang_name);
 
@@ -5972,7 +5972,7 @@ static void FeatureTownName(ByteReader *buf)
 				townname->partlist[id][i].parts[j].data.id = ref_id;
 			} else {
 				const char *text = buf->ReadString();
-				townname->partlist[id][i].parts[j].data.text = TranslateTTDPatchCodes(grfid, text);
+				townname->partlist[id][i].parts[j].data.text = TranslateTTDPatchCodes(grfid, 0, text);
 				grfmsg(6, "FeatureTownName: part %d, text %d, '%s' (with probability %d)", i, j, townname->partlist[id][i].parts[j].data.text, prob);
 			}
 			townname->partlist[id][i].parts[j].prob = prob;
diff --git a/src/newgrf_text.cpp b/src/newgrf_text.cpp
index ae48aa3eb6..167e27b9aa 100644
--- a/src/newgrf_text.cpp
+++ b/src/newgrf_text.cpp
@@ -196,7 +196,14 @@ static GRFTextEntry _grf_text[(1 << TABSIZE) * 3];
 static byte _currentLangID = GRFLX_ENGLISH;  ///< by default, english is used.
 
 
-char *TranslateTTDPatchCodes(uint32 grfid, const char *str)
+/**
+ * Translate TTDPatch string codes into something OpenTTD can handle (better).
+ * @param grfid       The (NewGRF) ID associated with this string
+ * @param language_id The (NewGRF) language ID associated with this string.
+ * @param str         The string to translate.
+ * @return The translated string.
+ */
+char *TranslateTTDPatchCodes(uint32 grfid, uint8 language_id, const char *str)
 {
 	char *tmp = MallocT<char>(strlen(str) * 10 + 1); // Allocate space to allow for expansion
 	char *d = tmp;
@@ -380,7 +387,7 @@ void AddGRFTextToList(GRFText **list, GRFText *text_to_add)
  */
 void AddGRFTextToList(struct GRFText **list, byte langid, uint32 grfid, const char *text_to_add)
 {
-	char *translatedtext = TranslateTTDPatchCodes(grfid, text_to_add);
+	char *translatedtext = TranslateTTDPatchCodes(grfid, langid, text_to_add);
 	GRFText *newtext = GRFText::New(langid, translatedtext);
 	free(translatedtext);
 
@@ -449,7 +456,7 @@ StringID AddGRFString(uint32 grfid, uint16 stringid, byte langid_to_add, bool ne
 	/* Too many strings allocated, return empty */
 	if (id == lengthof(_grf_text)) return STR_EMPTY;
 
-	translatedtext = TranslateTTDPatchCodes(grfid, text_to_add);
+	translatedtext = TranslateTTDPatchCodes(grfid, langid_to_add, text_to_add);
 
 	GRFText *newtext = GRFText::New(langid_to_add, translatedtext);
 
diff --git a/src/newgrf_text.h b/src/newgrf_text.h
index e6e3b9e16e..e86487c21f 100644
--- a/src/newgrf_text.h
+++ b/src/newgrf_text.h
@@ -20,7 +20,7 @@ const char *GetGRFStringFromGRFText(const struct GRFText *text);
 const char *GetGRFStringPtr(uint16 stringid);
 void CleanUpStrings();
 void SetCurrentGrfLangID(byte language_id);
-char *TranslateTTDPatchCodes(uint32 grfid, const char *str);
+char *TranslateTTDPatchCodes(uint32 grfid, uint8 language_id, const char *str);
 struct GRFText *DuplicateGRFText(struct GRFText *orig);
 void AddGRFTextToList(struct GRFText **list, struct GRFText *text_to_add);
 void AddGRFTextToList(struct GRFText **list, byte langid, uint32 grfid, const char *text_to_add);