diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0c5177d..dce5455 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -9,9 +9,5 @@ set_target_properties(${PROJECT_NAME} PROPERTIES
     CXX_STANDARD_REQUIRED YES
     CXX_EXTENSIONS NO)
 
-if(MSVC)
-    target_compile_options(${PROJECT_NAME} PRIVATE /bigobj)
-endif(MSVC)
-
 enable_testing()
 add_test(${PROJECT_NAME} ${PROJECT_NAME})
diff --git a/tests.cpp b/tests.cpp
index ae722fa..f366468 100644
--- a/tests.cpp
+++ b/tests.cpp
@@ -4,12 +4,14 @@
  * Copyright (C) 2018 Matvey Cherevko
  ******************************************************************************/
 
-#define CATCH_CONFIG_MAIN
+#define CATCH_CONFIG_FAST_COMPILE
 #include "catch.hpp"
 
 #include "promise.hpp"
 namespace pr = promise_hpp;
 
+#include <cstring>
+
 namespace
 {
     struct obj_t {
diff --git a/tests_main.cpp b/tests_main.cpp
new file mode 100644
index 0000000..637c53c
--- /dev/null
+++ b/tests_main.cpp
@@ -0,0 +1,9 @@
+/*******************************************************************************
+ * This file is part of the "promise.hpp"
+ * For conditions of distribution and use, see copyright notice in LICENSE.md
+ * Copyright (C) 2018 Matvey Cherevko
+ ******************************************************************************/
+
+#define CATCH_CONFIG_MAIN
+#define CATCH_CONFIG_FAST_COMPILE
+#include "catch.hpp"