diff --git a/app/controllers/rails_admin/main_controller.rb b/app/controllers/rails_admin/main_controller.rb
index 50851fcd4b..053f71565d 100644
--- a/app/controllers/rails_admin/main_controller.rb
+++ b/app/controllers/rails_admin/main_controller.rb
@@ -40,7 +40,7 @@ def list_entries(model_config = @model_config, auth_scope_key = :index, addition
     end
 
     private
-    
+
     def get_layout
       "rails_admin/#{request.headers['X-PJAX'] ? 'pjax' : 'application'}"
     end
diff --git a/lib/rails_admin/adapters/mongoid.rb b/lib/rails_admin/adapters/mongoid.rb
index 215dc8fe0d..f28a448f2d 100644
--- a/lib/rails_admin/adapters/mongoid.rb
+++ b/lib/rails_admin/adapters/mongoid.rb
@@ -237,7 +237,7 @@ def build_statement(column, type, value, operator)
           return if value.blank?
           value = case operator
           when 'default', 'like'
-            Regexp.compile(Regexp.escape(value))
+            Regexp.compile(Regexp.escape(value), Regexp::IGNORECASE)
           when 'starts_with'
             Regexp.compile("^#{Regexp.escape(value)}")
           when 'ends_with'
diff --git a/spec/unit/adapters/mongoid_spec.rb b/spec/unit/adapters/mongoid_spec.rb
index 189dfe9ef5..52ced72227 100644
--- a/spec/unit/adapters/mongoid_spec.rb
+++ b/spec/unit/adapters/mongoid_spec.rb
@@ -686,10 +686,10 @@ class CustomValiated
     it "supports string type query" do
       @abstract_model.send(:build_statement, :field, :string, "", nil).should be_nil
       @abstract_model.send(:build_statement, :field, :string, "foo", "was").should be_nil
-      @abstract_model.send(:build_statement, :field, :string, "foo", "default").should == {:field=>/foo/}
-      @abstract_model.send(:build_statement, :field, :string, "foo", "like").should == {:field=>/foo/}
-      @abstract_model.send(:build_statement, :field, :string, "foo", "starts_with").should == {:field=>/^foo/}
-      @abstract_model.send(:build_statement, :field, :string, "foo", "ends_with").should == {:field=>/foo$/}
+      @abstract_model.send(:build_statement, :field, :string, "foo", "default").should == {:field=>/foo/i}
+      @abstract_model.send(:build_statement, :field, :string, "foo", "like").should == {:field=>/foo/i}
+      @abstract_model.send(:build_statement, :field, :string, "foo", "starts_with").should == {:field=>/^foo/i}
+      @abstract_model.send(:build_statement, :field, :string, "foo", "ends_with").should == {:field=>/foo$/i}
       @abstract_model.send(:build_statement, :field, :string, "foo", "is").should == {:field=>'foo'}
     end