hitherto → until now

app/src/main/res/values/strings.xml

@@ -25,7 +25,7 @@
     <string name="nc_search">Search</string>
 
     <string name="nc_certificate_dialog_title">Check out the certificate</string>
-    <string name="nc_certificate_dialog_text">Do you trust hitherto unknown SSL certificate, issued by %1$s for %2$s, valid from %3$s to %4$s?</string>
+    <string name="nc_certificate_dialog_text">Do you trust the until now unknown SSL certificate, issued by %1$s for %2$s, valid from %3$s to %4$s?</string>
     <string name="nc_yes">Yes</string>
     <string name="nc_no">No</string>
     <string name="nc_details">Details</string>