diff --git a/actionpack/lib/action_controller/metal/http_authentication.rb b/actionpack/lib/action_controller/metal/http_authentication.rb
index 648d96fc0ee61..2ad4df5b53ad8 100644
--- a/actionpack/lib/action_controller/metal/http_authentication.rb
+++ b/actionpack/lib/action_controller/metal/http_authentication.rb
@@ -104,7 +104,7 @@ def authenticate(request, &login_procedure)
       end
 
       def has_basic_credentials?(request)
-        request.authorization.present? && (auth_scheme(request).downcase == "basic") && user_name_and_password(request).length == 2
+        request.authorization.present? && (auth_scheme(request).downcase == "basic")
       end
 
       def user_name_and_password(request)
diff --git a/actionpack/test/controller/http_basic_authentication_test.rb b/actionpack/test/controller/http_basic_authentication_test.rb
index 8c81f42a76ab6..73524d0443c87 100644
--- a/actionpack/test/controller/http_basic_authentication_test.rb
+++ b/actionpack/test/controller/http_basic_authentication_test.rb
@@ -112,11 +112,6 @@ def test_encode_credentials_has_no_newline
     assert_no_match(/\n/, result)
   end
 
-  test "has_basic_credentials? should fail with credentials without colon" do
-    @request.env["HTTP_AUTHORIZATION"] = "Basic #{::Base64.encode64("David Goliath")}"
-    assert_not ActionController::HttpAuthentication::Basic.has_basic_credentials?(@request)
-  end
-
   test "successful authentication with uppercase authorization scheme" do
     @request.env["HTTP_AUTHORIZATION"] = "BASIC #{::Base64.encode64("lifo:world")}"
     get :index