diff --git a/bin/vagrant b/bin/vagrant
index 5436ad40b..0e6abdcef 100755
--- a/bin/vagrant
+++ b/bin/vagrant
@@ -174,11 +174,6 @@ begin
       ui.warn(I18n.t("vagrant.general.experimental.all"), bold: true, prefix: true, channel: :error)
     else
       ui.warn(I18n.t("vagrant.general.experimental.features", features: experimental.join(", ")), bold: true, prefix: true, channel: :error)
-
-      diff = Vagrant::Util::Experimental.features_valid?
-      if !diff.empty?
-        ui.error(I18n.t("vagrant.general.experimental.unknown_features", unknown: diff.join(", ")), bold: true, prefix: true, channel: :error)
-      end
     end
   end
 
diff --git a/lib/vagrant/util/experimental.rb b/lib/vagrant/util/experimental.rb
index 49490ec41..8888a7224 100644
--- a/lib/vagrant/util/experimental.rb
+++ b/lib/vagrant/util/experimental.rb
@@ -1,9 +1,7 @@
 module Vagrant
   module Util
     class Experimental
-      VALID_FEATURES = []
       class << self
-
         # A method for determining if the experimental flag has been enabled with
         # any features
         #
@@ -27,7 +25,7 @@ module Vagrant
         def global_enabled?
           if !defined?(@_global_enabled)
             experimental = features_requested
-            if experimental.size == 1 && experimental.first == "1" || (experimental.size > 0 && experimental.sort == VALID_FEATURES.sort)
+            if experimental.size == 1 && experimental.first == "1"
               @_global_enabled = true
             else
               @_global_enabled = false
@@ -45,19 +43,7 @@ module Vagrant
           experimental = features_requested
           feature = feature.to_s
 
-          return global_enabled? || (VALID_FEATURES.include?(feature) && experimental.include?(feature))
-        end
-
-        # Determines if there are any unrecognized requested features
-        #
-        # @return [Array]
-        def features_valid?
-          if !defined?(@_features_diff)
-            @_features_diff = []
-            features = features_requested
-            features.each { |f| @_features_diff << f if !VALID_FEATURES.include?(f) }
-          end
-          @_features_diff
+          return global_enabled? || experimental.include?(feature)
         end
 
         # Returns the features requested for the experimental flag
diff --git a/templates/locales/en.yml b/templates/locales/en.yml
index 9b2e8502d..3890182b6 100644
--- a/templates/locales/en.yml
+++ b/templates/locales/en.yml
@@ -405,10 +405,6 @@ en:
 
           Please use with caution, as some of the features may not be fully
           functional yet.
-        unknown_features: |-
-          Requested unknown feature flags will be ignored:
-
-          Unknown:   %{unknown}
       not_in_installer: |-
         You appear to be running Vagrant outside of the official installers.
         Note that the installers are what ensure that Vagrant has all required
diff --git a/test/unit/vagrant/util/experimental_test.rb b/test/unit/vagrant/util/experimental_test.rb
index aa5e11978..d4a03c4ad 100644
--- a/test/unit/vagrant/util/experimental_test.rb
+++ b/test/unit/vagrant/util/experimental_test.rb
@@ -40,12 +40,6 @@ describe Vagrant::Util::Experimental do
       expect(subject.global_enabled?).to eq(false)
     end
 
-    it "returns true if enabled with a complete list of features" do
-      stub_const("Vagrant::Util::Experimental::VALID_FEATURES", ["list","of","features"])
-      allow(ENV).to receive(:[]).with("VAGRANT_EXPERIMENTAL").and_return("list,of,features")
-      expect(subject.global_enabled?).to eq(true)
-    end
-
     it "returns false if disabled" do
       allow(ENV).to receive(:[]).with("VAGRANT_EXPERIMENTAL").and_return("0")
       expect(subject.global_enabled?).to eq(false)
@@ -58,10 +52,6 @@ describe Vagrant::Util::Experimental do
   end
 
   describe "#feature_enabled?" do
-    before(:each) do
-      stub_const("Vagrant::Util::Experimental::VALID_FEATURES", ["secret_feature"])
-    end
-
     it "returns true if flag set to 1" do
       allow(ENV).to receive(:[]).with("VAGRANT_EXPERIMENTAL").and_return("1")
       expect(subject.feature_enabled?("anything")).to eq(true)
@@ -98,22 +88,6 @@ describe Vagrant::Util::Experimental do
     end
   end
 
-  describe "#features_valid" do
-    before(:each) do
-      stub_const("Vagrant::Util::Experimental::VALID_FEATURES", ["cool_feature", "other_feature", "secret_feature"])
-    end
-
-    it "returns an empty array if no diffs found" do
-      allow(ENV).to receive(:[]).with("VAGRANT_EXPERIMENTAL").and_return("cool_feature,other_feature")
-      expect(subject.features_valid?).to eq([])
-    end
-
-    it "returns the invalid flag if found" do
-      allow(ENV).to receive(:[]).with("VAGRANT_EXPERIMENTAL").and_return("fake_feature")
-      expect(subject.features_valid?).to eq(["fake_feature"])
-    end
-  end
-
   describe "#features_requested" do
     it "returns an array of requested features" do
       allow(ENV).to receive(:[]).with("VAGRANT_EXPERIMENTAL").and_return("secret_feature,other_secret")
@@ -122,10 +96,6 @@ describe Vagrant::Util::Experimental do
   end
 
   describe "#guard_with" do
-    before(:each) do
-      stub_const("Vagrant::Util::Experimental::VALID_FEATURES", ["secret_feature"])
-    end
-
     it "does not execute the block if the feature is not requested" do
       allow(ENV).to receive(:[]).with("VAGRANT_EXPERIMENTAL").and_return(nil)
       expect{|b| subject.guard_with("secret_feature", &b) }.not_to yield_control