diff --git a/lib/administrate/resource_resolver.rb b/lib/administrate/resource_resolver.rb
index 9e3a3001a7..a3a24a7320 100644
--- a/lib/administrate/resource_resolver.rb
+++ b/lib/administrate/resource_resolver.rb
@@ -35,7 +35,8 @@ def model_path_parts
     end
 
     def controller_path_parts
-      controller_path.split("/")[1..-1].map(&:singularize)
+      path_parts = controller_path.split("/")[1..-1]
+      path_parts << path_parts.pop.singularize
     end
 
     attr_reader :controller_path
diff --git a/spec/lib/administrate/resource_resolver_spec.rb b/spec/lib/administrate/resource_resolver_spec.rb
index 26badacab8..273fbe802f 100644
--- a/spec/lib/administrate/resource_resolver_spec.rb
+++ b/spec/lib/administrate/resource_resolver_spec.rb
@@ -23,6 +23,17 @@ module Library; class BookDashboard; end; end
         remove_constants :Library
       end
     end
+
+    it "handles plural namespaced models" do
+      begin
+        module Libraries; class BookDashboard; end; end
+        resolver = Administrate::ResourceResolver.new("admin/libraries/books")
+
+        expect(resolver.dashboard_class).to eq(Libraries::BookDashboard)
+      ensure
+        remove_constants :Libraries
+      end
+    end
   end
 
   describe "#namespace" do