diff --git a/nano/templates/personal_crafting.tmpl b/nano/templates/personal_crafting.tmpl
index b18e143c086..c209a8ad4bf 100644
--- a/nano/templates/personal_crafting.tmpl
+++ b/nano/templates/personal_crafting.tmpl
@@ -1,5 +1,5 @@
 <script>
-	{{var tooltiptext = function(req_text, catalyst_text, tool_text) { let text = ""; if(req_text){text += "REQUIREMENTS: " + req_text + " ";} if(catalyst_text){text += "CATALYSTS: " + catalyst_text + " ";} if(tool_text){text += "TOOLS: " + tool_text;}return text;};}}
+	{{var tooltiptext = function(req_text, catalyst_text, tool_text) { var text = ""; if(req_text){text += "REQUIREMENTS: " + req_text + " ";} if(catalyst_text){text += "CATALYSTS: " + catalyst_text + " ";} if(tool_text){text += "TOOLS: " + tool_text;}return text;};}}
 </script>