diff --git a/files/www/cgi-bin/mesh b/files/www/cgi-bin/mesh
index c69f4154..79faaa26 100755
--- a/files/www/cgi-bin/mesh
+++ b/files/www/cgi-bin/mesh
@@ -747,7 +747,7 @@ do
                 row = row .. val .. " minutes ago"
             end
         else
-            val = string.format("%.1f", age / 3600)
+            local val = string.format("%.1f", age / 3600)
             if val == "1.0" then
                 row = row .. "1 hour ago"
             else