diff --git a/examples/sinatra_app/features/field_fail.feature b/examples/sinatra_app/features/field_fail.feature
index 6a25177..3affd9c 100644
--- a/examples/sinatra_app/features/field_fail.feature
+++ b/examples/sinatra_app/features/field_fail.feature
@@ -19,6 +19,11 @@ Feature: Field failure test
     Then the "First name" field should contain "Alexy"
 
 
+  Scenario: Field should not contain (FAIL)
+    When I fill in "First name" with "Ivan"
+    Then the "First name" field should not contain "Ivan"
+
+
   Scenario: Fill in a single field (FAIL)
     When I fill in "Middle name" with "Fyodorovitch"
 
diff --git a/features/kelp_step_definitions.feature b/features/kelp_step_definitions.feature
index 8d27023..3c00b6c 100644
--- a/features/kelp_step_definitions.feature
+++ b/features/kelp_step_definitions.feature
@@ -86,14 +86,18 @@ Feature: Kelp Step Definitions
         Expected 'First name' to contain 'Alexy'
         Got 'Dmitry' (Kelp::Unexpected)
 
+      Scenario: Field should not contain (FAIL)
+        Did not expect 'First name' to contain 'Ivan'
+        Got 'Ivan' (Kelp::Unexpected)
+
       Scenario: Fill in a single field (FAIL)
         No field with id, name, or label 'Middle name' found (Kelp::FieldNotFound)
 
       Scenario: Fill in multiple fields (FAIL)
         Field 'Height' has no option 'Diminutive' (Kelp::OptionNotFound)
 
-      5 scenarios (5 failed)
-      13 steps (5 failed, 8 passed)
+      6 scenarios (6 failed)
+      16 steps (6 failed, 10 passed)
       """
 
   Scenario: Visibility test
diff --git a/spec/field_spec.rb b/spec/field_spec.rb
index e5f98d9..353c261 100644
--- a/spec/field_spec.rb
+++ b/spec/field_spec.rb
@@ -102,6 +102,58 @@
 end
 
 
+describe Kelp::Field, "field_should_not_contain" do
+  before(:each) do
+    visit('/form')
+  end
+
+  context "passes when" do
+    context "field with id" do
+      it "has a different value" do
+        fill_in "first_name", :with => "Brian"
+        field_should_not_contain "first_name", "Stewie"
+      end
+
+      it "is empty" do
+        field_should_not_contain "first_name", "Stewie"
+      end
+    end
+
+    context "field with label" do
+      it "has a different value" do
+        fill_in "First name", :with => "Brian"
+        field_should_not_contain "First name", "Stewie"
+      end
+
+      it "is empty" do
+        field_should_not_contain "First name", "Stewie"
+      end
+    end
+  end
+
+  context "fails when" do
+    context "field with id" do
+      it "has the given value" do
+        fill_in "first_name", :with => "Judith"
+        lambda do
+          field_should_not_contain "first_name", "Judith"
+        end.should raise_error(Kelp::Unexpected)
+      end
+    end
+
+    context "field with label" do
+      it "has the given value" do
+        fill_in "First name", :with => "Judith"
+        lambda do
+          field_should_not_contain "First name", "Judith"
+        end.should raise_error(Kelp::Unexpected)
+      end
+    end
+
+  end
+end
+
+
 describe Kelp::Field, "fields_should_contain" do
   before(:each) do
     visit('/form')