diff --git a/lib/arel/algebra/attributes/attribute.rb b/lib/arel/algebra/attributes/attribute.rb
index 640d6fac..64ea93d2 100644
--- a/lib/arel/algebra/attributes/attribute.rb
+++ b/lib/arel/algebra/attributes/attribute.rb
@@ -84,15 +84,15 @@ def /(other)
     module Predications
       methods = {
         :eq => "Equality",
-        :noteq => "Inequality",
+        :not_eq => "Inequality",
         :lt => "LessThan",
         :lteq => "LessThanOrEqualTo",
         :gt => "GreaterThan",
         :gteq => "GreaterThanOrEqualTo",
         :matches => "Match",
-        :notmatches => "NotMatch",
+        :not_matches => "NotMatch",
         :in => "In",
-        :notin => "NotIn"
+        :not_in => "NotIn"
       }
       
       def self.predication(name, klass)
diff --git a/spec/shared/relation_spec.rb b/spec/shared/relation_spec.rb
index dabbde2d..0759700d 100644
--- a/spec/shared/relation_spec.rb
+++ b/spec/shared/relation_spec.rb
@@ -35,9 +35,9 @@
       @relation.where(@relation[:age].eq(@pivot[@relation[:age]])).should have_rows(expected)
     end
 
-    it "finds rows with a noteq predicate" do
+    it "finds rows with a not eq predicate" do
       expected = @expected.select { |r| r[@relation[:age]] != @pivot[@relation[:age]] }
-      @relation.where(@relation[:age].noteq(@pivot[@relation[:age]])).should have_rows(expected)
+      @relation.where(@relation[:age].not_eq(@pivot[@relation[:age]])).should have_rows(expected)
     end
 
     it "finds rows with a less than predicate" do
@@ -67,7 +67,7 @@
     
     it "finds rows with a not matches predicate" do
       expected = @expected.select { |r| r[@relation[:name]] !~ /#{@pivot[@relation[:name]]}/ }
-      @relation.where(@relation[:name].notmatches(/#{@pivot[@relation[:name]]}/)).should have_rows(expected)
+      @relation.where(@relation[:name].not_matches(/#{@pivot[@relation[:name]]}/)).should have_rows(expected)
     end
 
     it "finds rows with an in predicate" do
@@ -77,7 +77,7 @@
     
     it "finds rows with a not in predicate" do
       expected = @expected.select {|r| !(r[@relation[:age]] >=3 && r[@relation[:age]] <= 20)}
-      @relation.where(@relation[:age].notin(3..20)).should have_rows(expected)
+      @relation.where(@relation[:age].not_in(3..20)).should have_rows(expected)
     end
     
     it "finds rows with a not predicate" do