diff --git a/README.md b/README.md
index 7f3d250..e32cf80 100644
--- a/README.md
+++ b/README.md
@@ -606,8 +606,8 @@ ordering on top of that just seemed a little much in my opinion.
 ### Status
 django-admin-sortable is currently used in production.
 
-### What's new in 2.1.12?
-- Fixed multiple list filter issue that was causing incorrect sortable objects to be displayed
+### What's new in 2.1.13?
+- Fixed an issue when sorting was performed on an object referenced by a raw_id field
 
 ### Future
 - Better template support for foreign keys that are self referential. If someone would like to take on rendering recursive sortables, that would be super.
diff --git a/README.rst b/README.rst
index 5492dda..ebdc33f 100644
--- a/README.rst
+++ b/README.rst
@@ -745,10 +745,10 @@ Status
 
 django-admin-sortable is currently used in production.
 
-What’s new in 2.1.12?
+What’s new in 2.1.13?
 ~~~~~~~~~~~~~~~~~~~~~
 
--  Fixed multiple list filter issue that was causing incorrect sortable objects to be displayed
+-  Fixed an issue when sorting was performed on an object referenced by a raw_id field
 
 Future
 ~~~~~~
diff --git a/adminsortable/__init__.py b/adminsortable/__init__.py
index b7dcfef..5e6cb6d 100644
--- a/adminsortable/__init__.py
+++ b/adminsortable/__init__.py
@@ -1,4 +1,4 @@
-VERSION = (2, 1, 12)
+VERSION = (2, 1, 13)
 DEV_N = None
 
 
diff --git a/adminsortable/admin.py b/adminsortable/admin.py
index 63f641b..f35c93e 100644
--- a/adminsortable/admin.py
+++ b/adminsortable/admin.py
@@ -34,6 +34,15 @@ class SortableAdminBase(object):
 
     after_sorting_js_callback_name = None
 
+    def get_querystring_filters(self, request):
+        filters = {}
+
+        for k, v in request.GET.items():
+            if k not in ['_to_field', '_popup',]:
+                filters.update({ k: v })
+
+        return filters
+
     def changelist_view(self, request, extra_context=None):
         """
         If the model that inherits Sortable has more than one object,
@@ -42,10 +51,7 @@ class SortableAdminBase(object):
         """
 
         # apply any filters via the querystring
-        filters = {}
-
-        for k, v in request.GET.items():
-            filters.update({ k: v })
+        filters = self.get_querystring_filters(request)
 
         # Check if the filtered queryset contains more than 1 item
         # to enable sort link
@@ -131,7 +137,8 @@ class SortableAdmin(SortableAdminBase, ModelAdmin):
         # get sort group index from querystring if present
         sort_filter_index = request.GET.get('sort_filter')
 
-        filters = {}
+        # apply any filters via the querystring
+        filters = self.get_querystring_filters(request)
 
         if sort_filter_index:
             try:
@@ -139,10 +146,6 @@ class SortableAdmin(SortableAdminBase, ModelAdmin):
             except (IndexError, ValueError):
                 pass
 
-        # apply any filters via the querystring
-        for k, v in request.GET.items():
-            filters.update({ k: v })
-
         # Apply any sort filters to create a subset of sortable objects
         return self.get_queryset(request).filter(**filters)
 
diff --git a/sample_project/database/test_project.sqlite b/sample_project/database/test_project.sqlite
index 8cfbd34..20b8afa 100644
Binary files a/sample_project/database/test_project.sqlite and b/sample_project/database/test_project.sqlite differ
diff --git a/sample_project/samples/admin.py b/sample_project/samples/admin.py
index 3761995..8d6bbed 100644
--- a/sample_project/samples/admin.py
+++ b/sample_project/samples/admin.py
@@ -52,6 +52,12 @@ class WidgetAdmin(SortableAdmin):
 admin.site.register(Widget, WidgetAdmin)
 
 
+class CreditAdmin(SortableAdmin):
+    raw_id_fields = ('project',)
+
+admin.site.register(Credit, CreditAdmin)
+
+
 class CreditInline(SortableTabularInline):
     model = Credit
     extra = 1