diff --git a/packages/forest_admin_datasource_rpc/lib/forest_admin_datasource_rpc/collection.rb b/packages/forest_admin_datasource_rpc/lib/forest_admin_datasource_rpc/collection.rb
index c797d77f7..46a17c196 100644
--- a/packages/forest_admin_datasource_rpc/lib/forest_admin_datasource_rpc/collection.rb
+++ b/packages/forest_admin_datasource_rpc/lib/forest_admin_datasource_rpc/collection.rb
@@ -127,7 +127,7 @@ def execute(caller, name, data, filter = nil)
         "Forwarding '#{@name}' action #{name} call to the Rpc agent on #{url}."
       )
 
-      @client.call_rpc(url, caller: caller, method: :post, payload: params)
+      @client.call_rpc(url, caller: caller, method: :post, payload: params, symbolize_keys: true)
     end
 
     def get_form(caller, name, data = nil, filter = nil, metas = nil)
diff --git a/packages/forest_admin_datasource_rpc/spec/lib/forest_admin_datasource_rpc/collection_spec.rb b/packages/forest_admin_datasource_rpc/spec/lib/forest_admin_datasource_rpc/collection_spec.rb
index 953797ff8..83b3d05af 100644
--- a/packages/forest_admin_datasource_rpc/spec/lib/forest_admin_datasource_rpc/collection_spec.rb
+++ b/packages/forest_admin_datasource_rpc/spec/lib/forest_admin_datasource_rpc/collection_spec.rb
@@ -233,6 +233,30 @@ module ForestAdminDatasourceRpc
           )
         end
       end
+
+      it 'asks the RPC client to symbolize response keys so ActionResult.parse sees :type' do
+        collection.execute(caller, 'my_action', {})
+
+        expect(rpc_client).to have_received(:call_rpc) do |_url, options|
+          expect(options[:symbolize_keys]).to be(true)
+        end
+      end
+
+      it 'returns the action result as-is so :type and other keys reach ActionResult.parse' do
+        success_result = {
+          type: 'Success',
+          message: 'ok',
+          invalidated: ['books'],
+          html: nil,
+          response_headers: {}
+        }
+        allow(rpc_client).to receive(:call_rpc).and_return(success_result)
+
+        result = collection.execute(caller, 'my_action', {})
+
+        expect(result).to eq(success_result)
+        expect(result[:type]).to eq('Success')
+      end
     end
 
     context 'when call get_form' do