diff --git a/library/ssl_ciphersuites.c b/library/ssl_ciphersuites.c
index 71094fa59..ba28b3ffd 100644
--- a/library/ssl_ciphersuites.c
+++ b/library/ssl_ciphersuites.c
@@ -34,6 +34,10 @@
 
 #include <stdlib.h>
 
+#if defined _MSC_VER && !defined strcasecmp
+#define strcasecmp _stricmp
+#endif
+
 /*
  * Ordered from most preferred to least preferred in terms of security.
  */