diff --git a/crypto/random-platform.c b/crypto/random-platform.c
index 0eddb915b7..92eed0ee78 100644
--- a/crypto/random-platform.c
+++ b/crypto/random-platform.c
@@ -23,7 +23,7 @@
 #include "crypto/random.h"
 
 #ifdef _WIN32
-#include <Wincrypt.h>
+#include <wincrypt.h>
 static HCRYPTPROV hCryptProv;
 #else
 static int fd; /* a file handle to either /dev/urandom or /dev/random */