diff --git a/changelog.md b/changelog.md
index ae532f9f2..9a9399d70 100644
--- a/changelog.md
+++ b/changelog.md
@@ -1,6 +1,12 @@
 ### 0.23.0 (Major Release)
 
 
+### 0.22.1 (Minor Release)
+
+#### Exclude many to one relationships from the advanced search
+
+Many to one fields are no longer visible in the advanced search screen.
+
 
 ### 0.22.0 (Major Release)
 
@@ -13,11 +19,11 @@ A list of functions attached to the application object that
 enable the application to add, remove or alter files in an
 advanced search extract.
 
-
 #### Include ID in the extract
 
 The model ID will no longer be excluded from its csv extract. If present, id will appear first, then patient id, then episode id.
 
+
 ### 0.21.0 (Major Release)
 
 #### Celery upgrade and Django Celery library change.
diff --git a/doc/mkdocs.yml b/doc/mkdocs.yml
index b2dc29e5d..2958d93c5 100644
--- a/doc/mkdocs.yml
+++ b/doc/mkdocs.yml
@@ -121,7 +121,7 @@ dev_addr: 0.0.0.0:8965
 include_next_prev: false
 
 extra:
-  version: v0.21.0
+  version: v0.23.0
 
 markdown_extensions:
     - fenced_code
diff --git a/opal/core/search/static/js/search/controllers/extract.js b/opal/core/search/static/js/search/controllers/extract.js
index 13a9462c7..0f4e6b11a 100644
--- a/opal/core/search/static/js/search/controllers/extract.js
+++ b/opal/core/search/static/js/search/controllers/extract.js
@@ -85,10 +85,8 @@ angular.module('opal.controllers').controller(
 
       return criteria;
     };
-
     $scope.searchableFields = function(columnName){
         var column = $scope.findColumn(columnName);
-        // TODO - don't hard-code this
         if(column){
           return _.map(
               _.reject(
@@ -97,8 +95,9 @@ angular.module('opal.controllers').controller(
                       if(_.contains(NOT_ADVANCED_SEARCHABLE, c.name)){
                           return true;
                       }
-                      return c.type == 'token' ||  c.type ==  'list';
+                      return c.type == 'token' ||  c.type ==  'list' || c.type == "many_to_o";;
                   }),
+
               function(c){ return c; }
           ).sort();
         }
@@ -144,6 +143,9 @@ angular.module('opal.controllers').controller(
     };
 
     $scope.getChoices = function(column, field){
+      if(!field){
+        return []
+      }
       var modelField = $scope.findField(column, field);
 
       if(modelField.lookup_list && modelField.lookup_list.length){
diff --git a/opal/core/search/static/js/test/extract.controller.test.js b/opal/core/search/static/js/test/extract.controller.test.js
index 371138e7b..43b844268 100644
--- a/opal/core/search/static/js/test/extract.controller.test.js
+++ b/opal/core/search/static/js/test/extract.controller.test.js
@@ -102,6 +102,12 @@ describe('ExtractCtrl', function(){
                     "name":"consistency_token",
                     "type":"token"
                 },
+                {
+                    "title":"A Many To One",
+                    "lookup_list":null,
+                    "name":"a many to one",
+                    "type":"many_to_o"
+                },
                 {
                     "title":"Created",
                     "lookup_list":null,
@@ -375,6 +381,11 @@ describe('ExtractCtrl', function(){
           var result = $scope.getChoices("some", "field");
           expect(result).toEqual([1, 2, 3]);
         });
+
+        it('should error if there is no field', function(){
+            var result = $scope.getChoices("some", null);
+            expect(result).toEqual([]);
+        });
     });
 
     describe('refresh', function(){