diff --git a/contrib/Windows/Projects/clamAV/libclamav/compat.c b/contrib/Windows/Projects/clamAV/libclamav/compat.c
index 4b9c6b480..f2d50cd82 100644
--- a/contrib/Windows/Projects/clamAV/libclamav/compat.c
+++ b/contrib/Windows/Projects/clamAV/libclamav/compat.c
@@ -494,3 +494,15 @@ initlog(const char *source)
 	return 1;
 }
 #endif
+
+int
+snprintf(char *str, size_t size, const char *format, ...)
+{
+	int ret;
+	
+	va_list args;
+	va_start(args, format);
+	ret = _vsnprintf_s(str, size, _TRUNCATE, format, args);
+	va_end(args);
+	return ret;
+}
\ No newline at end of file