diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4d4563faee..e1b39160aa 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,7 @@
 
 #### Fixes
 
+* [#number](https://github.com/ruby-grape/grape/pull/number): Detect content type in case of raising Rack level errors - [@iCEAGE](https://github.com/iCEAGE)
 * [#1405](https://github.com/ruby-grape/grape/pull/1405): Fix priority of `rescue_from` clauses applying - [@hedgesky](https://github.com/hedgesky).
 * [#1365](https://github.com/ruby-grape/grape/pull/1365): Fix finding exception handler in error middleware - [@ktimothy](https://github.com/ktimothy).
 * [#1380](https://github.com/ruby-grape/grape/pull/1380): Fix `allow_blank: false` for `Time` attributes with valid values causes `NoMethodError` - [@ipkes](https://github.com/ipkes).
diff --git a/lib/grape/middleware/formatter.rb b/lib/grape/middleware/formatter.rb
index ea5705e1f8..ac08c4b03a 100644
--- a/lib/grape/middleware/formatter.rb
+++ b/lib/grape/middleware/formatter.rb
@@ -1,4 +1,5 @@
 require 'grape/middleware/base'
+require 'rack/utils'
 
 module Grape
   module Middleware
@@ -139,7 +140,11 @@ def format_from_extension
       end
 
       def format_from_params
-        fmt = Rack::Utils.parse_nested_query(env[Grape::Http::Headers::QUERY_STRING])[Grape::Http::Headers::FORMAT]
+        fmt = begin
+          Rack::Utils.parse_nested_query(env[Grape::Http::Headers::QUERY_STRING])[Grape::Http::Headers::FORMAT]
+        rescue Rack::Utils::ParameterTypeError, Rack::Utils::InvalidParameterError
+          nil
+        end
         # avoid symbol memory leak on an unknown format
         return fmt.to_sym if content_type_for(fmt)
         fmt
diff --git a/spec/grape/middleware/formatter_spec.rb b/spec/grape/middleware/formatter_spec.rb
index 5a1fd1120b..ab8c6ead24 100644
--- a/spec/grape/middleware/formatter_spec.rb
+++ b/spec/grape/middleware/formatter_spec.rb
@@ -117,6 +117,24 @@ def to_xml
       expect(subject.env['api.format']).to eq(:json)
     end
 
+    it 'uses the requested format with invalid parameter type if provided in headers' do
+      _, headers, = subject.call(
+        'PATH_INFO' => '/info',
+        'QUERY_STRING' => 'id=12&id[]=12',
+        'HTTP_ACCEPT' => 'application/json'
+      )
+      expect(headers['Content-type']).to eq('application/json')
+    end
+
+    it 'uses the requested format with invalid byte sequence in UTF-8 if provided in headers' do
+      _, headers, = subject.call(
+        'PATH_INFO' => '/info',
+        'QUERY_STRING' => 'foo%81E=1',
+        'HTTP_ACCEPT' => 'application/json'
+      )
+      expect(headers['Content-type']).to eq('application/json')
+    end
+
     it 'handles quality rankings mixed with nothing' do
       subject.call('PATH_INFO' => '/info', 'HTTP_ACCEPT' => 'application/json,application/xml; q=1.0')
       expect(subject.env['api.format']).to eq(:xml)