diff --git a/chrome/content/zotero/xpcom/citeproc.js b/chrome/content/zotero/xpcom/citeproc.js
index 11b0c397a..1a00a13bc 100644
--- a/chrome/content/zotero/xpcom/citeproc.js
+++ b/chrome/content/zotero/xpcom/citeproc.js
@@ -1752,7 +1752,7 @@ CSL.DateParser = function (txt) {
 };
 CSL.Engine = function (sys, style, lang, forceLang) {
 	var attrs, langspec, localexml, locale;
-	this.processor_version = "1.0.118";
+	this.processor_version = "1.0.120";
 	this.csl_version = "1.0";
 	this.sys = sys;
 	this.sys.xml = new CSL.System.Xml.Parsing();
@@ -2158,6 +2158,13 @@ CSL.Engine.prototype.setOriginalCreatorNameFormatOption = function (arg) {
 		this.opt["locale-use-original-name-format"] = false;
 	}
 };
+CSL.Engine.prototype.setSuppressTitleTransliterationOption = function (arg) {
+	if (arg) {
+		this.opt["locale-suppress-title-transliteration"] = true;
+	} else {
+		this.opt["locale-suppress-title-transliteration"] = false;
+	}
+};
 CSL.Engine.prototype.setAutoVietnameseNamesOption = function (arg) {
 	if (arg) {
 		this.opt["auto-vietnamese-names"] = true;
@@ -6244,7 +6251,16 @@ CSL.Transform = function (state) {
 		} else if (transform_locale === "locale-sec") {
 			return function (state, Item) {
 				var primary, secondary, primary_tok, secondary_tok, key;
-				primary = getTextSubField(Item, myfieldname, "locale-pri", transform_fallback);
+				if (state.opt["locale-suppress-title-transliteration"] 
+					&& (state.tmp.area === 'bibliography'
+						|| (state.opt.xclass === "note" &&
+							state.tmp.area === "citation")
+						)
+					) {
+					primary = Item[myfieldname];
+				} else {
+					primary = getTextSubField(Item, myfieldname, "locale-pri", transform_fallback);
+				}
 				secondary = getTextSubField(Item, myfieldname, "locale-sec");
 				if (secondary) {
 					primary_tok = CSL.Util.cloneToken(this);
@@ -8615,7 +8631,7 @@ CSL.Registry.Comparifier = function (state, keyset) {
 			} else if ("undefined" === typeof b.sortkeys[pos]) {
 				cmp = sort_directions[pos][0];
 			} else {
-				cmp = a.sortkeys[pos].toLocaleLowerCase().localeCompare(b.sortkeys[pos].toLocaleLowerCase());
+				cmp = a.sortkeys[pos].localeCompare(b.sortkeys[pos]);
 			}
 			if (0 < cmp) {
 				return sort_directions[pos][1];