diff --git a/Gemfile.lock b/Gemfile.lock
index 22fc285..1595915 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,13 +2,13 @@ PATH
   remote: .
   specs:
     grape-throttle (0.0.5)
-      grape (>= 0.10.0)
+      grape (>= 0.16.0)
       redis (~> 3.2)
 
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (4.2.5)
+    activesupport (4.2.6)
       i18n (~> 0.7)
       json (~> 1.7, >= 1.7.7)
       minitest (~> 5.1)
@@ -24,46 +24,48 @@ GEM
     descendants_tracker (0.0.4)
       thread_safe (~> 0.3, >= 0.3.1)
     diff-lcs (1.2.5)
+    enumerable-lazy (0.0.1)
     equalizer (0.0.11)
     fakeredis (0.5.0)
       redis (~> 3.0)
-    grape (0.13.0)
+    grape (0.16.1)
       activesupport
       builder
       hashie (>= 2.1.0)
       multi_json (>= 1.3.2)
       multi_xml (>= 0.5.2)
+      mustermann19 (~> 0.4.3)
       rack (>= 1.3.0)
       rack-accept
-      rack-mount
       virtus (>= 1.0.0)
     hashie (3.4.3)
     i18n (0.7.0)
-    ice_nine (0.11.1)
+    ice_nine (0.11.2)
     json (1.8.3)
-    minitest (5.8.3)
+    minitest (5.8.4)
     multi_json (1.11.2)
     multi_xml (0.5.5)
-    rack (1.6.0)
+    mustermann19 (0.4.3)
+      enumerable-lazy
+    rack (1.6.4)
     rack-accept (0.4.5)
       rack (>= 0.4)
-    rack-mount (0.8.3)
-      rack (>= 1.0.0)
-    rack-test (0.6.2)
+    rack-test (0.6.3)
       rack (>= 1.0)
     redis (3.2.2)
-    rspec (3.1.0)
-      rspec-core (~> 3.1.0)
-      rspec-expectations (~> 3.1.0)
-      rspec-mocks (~> 3.1.0)
-    rspec-core (3.1.7)
-      rspec-support (~> 3.1.0)
-    rspec-expectations (3.1.2)
+    rspec (3.4.0)
+      rspec-core (~> 3.4.0)
+      rspec-expectations (~> 3.4.0)
+      rspec-mocks (~> 3.4.0)
+    rspec-core (3.4.4)
+      rspec-support (~> 3.4.0)
+    rspec-expectations (3.4.0)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.1.0)
-    rspec-mocks (3.1.3)
-      rspec-support (~> 3.1.0)
-    rspec-support (3.1.2)
+      rspec-support (~> 3.4.0)
+    rspec-mocks (3.4.1)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.4.0)
+    rspec-support (3.4.1)
     thread_safe (0.3.5)
     tzinfo (1.2.2)
       thread_safe (~> 0.1)
@@ -82,3 +84,6 @@ DEPENDENCIES
   grape-throttle!
   rack-test
   rspec (~> 3.0)
+
+BUNDLED WITH
+   1.11.2
diff --git a/grape-throttle.gemspec b/grape-throttle.gemspec
index e863f23..916ae90 100644
--- a/grape-throttle.gemspec
+++ b/grape-throttle.gemspec
@@ -14,7 +14,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'bundler'
   s.add_development_dependency 'fakeredis', '~> 0.5.0'
 
-  s.add_runtime_dependency 'grape', '>= 0.10.0'
+  s.add_runtime_dependency 'grape', '>= 0.16.0'
   s.add_runtime_dependency 'redis', '~>3.2'
 
   s.files = ["lib/grape-throttle.rb", "lib/grape/extensions/throttle_extension.rb", "lib/grape/middleware/throttle_middleware.rb"]
diff --git a/lib/grape/middleware/throttle_middleware.rb b/lib/grape/middleware/throttle_middleware.rb
index 089b0e1..48f46ab 100644
--- a/lib/grape/middleware/throttle_middleware.rb
+++ b/lib/grape/middleware/throttle_middleware.rb
@@ -29,7 +29,7 @@ def before
         user_value ||= "ip:#{env['REMOTE_ADDR']}"
 
         r = endpoint.routes.first
-        rate_key = "#{r.route_method}:#{r.route_path}:#{user_value}"
+        rate_key = "#{r.request_method}:#{r.path}:#{user_value}"
 
         redis = options[:cache]
         begin
diff --git a/spec/simple_api_spec.rb b/spec/simple_api_spec.rb
index 1831dae..7e5de4b 100644
--- a/spec/simple_api_spec.rb
+++ b/spec/simple_api_spec.rb
@@ -90,7 +90,7 @@ def app
     end
 
     it "throws an error if period or limit is missing" do
-      expect { get("wrong-configuration") }.to raise_exception
+      expect { get("wrong-configuration") }.to raise_exception ArgumentError, 'Please set a period and limit (see documentation)'
     end
 
     it "only throttles if explicitly specified" do