diff --git a/lib/geocoder/lookups/base.rb b/lib/geocoder/lookups/base.rb
index <HASH>..<HASH> 100644
--- a/lib/geocoder/lookups/base.rb
+++ b/lib/geocoder/lookups/base.rb
@@ -190,7 +190,7 @@ module Geocoder
         else
           JSON.parse(data)
         end
-      rescue => err
+      rescue
         raise_error(ResponseParseError.new(data)) or Geocoder.log(:warn, "Geocoding API's response was not valid JSON: #{data}")
       end
"warning: assigned but unused variable - err"