diff --git a/platform/platform_tests_support/helpers.hpp b/platform/platform_tests_support/helpers.hpp
index a7dbdf7292..8dba58bf76 100644
--- a/platform/platform_tests_support/helpers.hpp
+++ b/platform/platform_tests_support/helpers.hpp
@@ -1,3 +1,5 @@
+#pragma once
+
 #if defined(OMIM_OS_MAC) || defined(OMIM_OS_LINUX)
 #include <sys/resource.h>
 #endif