diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index bad6bb6..3391113 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1,6 +1,6 @@
 # The MIT License
 #
-# Copyright (C) 2018-2023 Alexander Saprykin <saprykin.spb@gmail.com>
+# Copyright (C) 2018-2024 Alexander Saprykin <saprykin.spb@gmail.com>
 #
 # Permission is hereby granted, free of charge, to any person obtaining
 # a copy of this software and associated documentation files (the
@@ -806,7 +806,7 @@ set (CMAKE_REQUIRED_LIBRARIES ${SAVED_CMAKE_REQUIRED_LIBRARIES})
 set (SAVED_CMAKE_REQUIRED_FLAGS ${SAVED_CMAKE_REQUIRED_FLAGS})
 
 # Disable useless warnings
-if (MSVC OR CMAKE_C_SIMULATE_ID STREQUAL "MSVC")
+if (PLIBSYS_C_COMPILER STREQUAL msvc OR CMAKE_C_SIMULATE_ID STREQUAL MSVC)
         list (APPEND PLIBSYS_COMPILE_DEFS -D_CRT_SECURE_NO_WARNINGS)
         list (APPEND PLIBSYS_COMPILE_DEFS -D_WINSOCK_DEPRECATED_NO_WARNINGS)
 endif()
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index ca532b2..6cfaac7 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -1,6 +1,6 @@
 # The MIT License
 #
-# Copyright (C) 2018-2023 Alexander Saprykin <saprykin.spb@gmail.com>
+# Copyright (C) 2018-2024 Alexander Saprykin <saprykin.spb@gmail.com>
 #
 # Permission is hereby granted, free of charge, to any person obtaining
 # a copy of this software and associated documentation files (the
@@ -30,7 +30,7 @@ plibsys_detect_target_os (PLIBSYS_TESTS_TARGET_OS)
 list (APPEND PLIBSYS_TEST_INCLUDE_DIRS ${PROJECT_SOURCE_DIR}/../src)
 list (APPEND PLIBSYS_TEST_INCLUDE_DIRS ${CMAKE_CURRENT_BINARY_DIR}/../src)
 
-if (MSVC OR CMAKE_CXX_SIMULATE_ID STREQUAL "MSVC")
+if (MSVC OR CMAKE_CXX_SIMULATE_ID STREQUAL MSVC)
         list (APPEND PLIBSYS_TEST_COMPILE_DEFS -D_CRT_SECURE_NO_WARNINGS)
 endif()