diff --git a/lib/instagram/request.rb b/lib/instagram/request.rb
index 9c5f061f..5e9ffc5a 100644
--- a/lib/instagram/request.rb
+++ b/lib/instagram/request.rb
@@ -30,7 +30,7 @@ def delete(path, options={}, signature=false, raw=false, unformatted=false, no_r
     def request(method, path, options, signature=false, raw=false, unformatted=false, no_response_wrapper=false, signed=sign_requests)
       response = connection(raw).send(method) do |request|
         path = formatted_path(path) unless unformatted
-        
+
         if signed == true
           if client_id != nil
             sig_options = options.merge({:client_id => client_id})
@@ -41,7 +41,7 @@ def request(method, path, options, signature=false, raw=false, unformatted=false
           sig = generate_sig("/"+path, sig_options, client_secret)
           options[:sig] = sig
         end
-        
+
         case method
         when :get, :delete
           request.url(URI.encode(path), options)
@@ -71,10 +71,11 @@ def get_insta_fowarded_for(ips, secret)
 
     def generate_sig(endpoint, params, secret)
       sig = endpoint
+      params = Hash[params.map{ |k, v| [k.to_s, v] }]
       params.sort.map do |key, val|
         sig += '|%s=%s' % [key, val]
       end
-      digest = OpenSSL::Digest::Digest.new('sha256')
+      digest = OpenSSL::Digest.new('sha256')
       return OpenSSL::HMAC.hexdigest(digest, secret, sig)
     end