diff --git a/library/ssl_ciphersuites.c b/library/ssl_ciphersuites.c
index 1c9f809..e1a8626 100644
--- a/library/ssl_ciphersuites.c
+++ b/library/ssl_ciphersuites.c
@@ -34,7 +34,7 @@
 
 #include <stdlib.h>
 
-#if defined _MSC_VER && !defined strcasecmp
+#if defined(_MSC_VER) && !defined strcasecmp
 #define strcasecmp _stricmp
 #endif