diff --git a/Modules/REST/test/CMakeLists.txt b/Modules/REST/test/CMakeLists.txt
index 42638c56cd..e42e23ad3f 100644
--- a/Modules/REST/test/CMakeLists.txt
+++ b/Modules/REST/test/CMakeLists.txt
@@ -1 +1,2 @@
 mitk_create_module_tests()
+set_tests_properties(mitkRESTClientTest mitkRESTServerTest PROPERTIES RUN_SERIAL TRUE)