diff --git a/Products/zms/rest_api.py b/Products/zms/rest_api.py
index ab7fd3e73..f54e736aa 100644
--- a/Products/zms/rest_api.py
+++ b/Products/zms/rest_api.py
@@ -324,6 +324,7 @@ def get_tags(self, context):
     @api(tag="version", pattern="/{path}/get_tag", method="GET", content_type="application/json")
     def get_tag(self, context):
         request = _get_request(context)
+        lang = request.get('lang')
         tag = request.get('tag').split(",")
         dt = tag[0]
         data = []
@@ -348,6 +349,7 @@ def get_tag(self, context):
     @api(tag="version", pattern="/{path}/body_content", method="GET", content_type="text/html")
     def body_content(self, context):
         request = _get_request(context)
+        lang = request.get('lang')
         tag = request.get('tag').split(",")
         dt = tag[0]
         html = []
diff --git a/Products/zms/zpt/versionmanager/manage_undoversionform.zpt b/Products/zms/zpt/versionmanager/manage_undoversionform.zpt
index 7d7f6cb86..52e76fdf6 100644
--- a/Products/zms/zpt/versionmanager/manage_undoversionform.zpt
+++ b/Products/zms/zpt/versionmanager/manage_undoversionform.zpt
@@ -202,7 +202,7 @@ $(function() {
 			$.get($ZMI.get_rest_api_url(href)+"/body_content", {tag:tag,lang:getZMILang()}, function(html) {
 				html = remove_curly_braces(html);
 				$html.html(html);
-				$.get($ZMI.get_rest_api_url(href)+"/get_tag",{tag:tag},function(json) {
+				$.get($ZMI.get_rest_api_url(href)+"/get_tag",{tag:tag,lang:getZMILang()},function(json) {
 					let str = JSON.stringify(json, null, 4)
 					$json.text(str);
 					console.log("Loaded " + tag + " for " + id);