diff --git a/security/AESStringCrypt.c b/security/AESStringCrypt.c
index efc8ab26c..eacc750bd 100644
--- a/security/AESStringCrypt.c
+++ b/security/AESStringCrypt.c
@@ -33,7 +33,7 @@
 
 #ifdef _WIN32
 #include <windows.h>
-#include <Wincrypt.h>
+#include <wincrypt.h>
 #else
 #include <unistd.h>
 #include <stdlib.h>