diff --git a/test/unit/UnitTestFileGenerator.h b/test/unit/UnitTestFileGenerator.h
index c0d863557..fcf31ef9f 100644
--- a/test/unit/UnitTestFileGenerator.h
+++ b/test/unit/UnitTestFileGenerator.h
@@ -3,7 +3,7 @@
 Open Asset Import Library (assimp)
 ---------------------------------------------------------------------------
 
-Copyright (c) 2006-2020, assimp team
+Copyright (c) 2006-2024, assimp team
 
 All rights reserved.
 
@@ -51,6 +51,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #endif
 
 #if defined(_MSC_VER)
+#define _CRT_SECURE_NO_WARNINGS
 #include <io.h>
 inline FILE* MakeTmpFile(char* tmplate)
 {