1 files changed, 5 insertions, 0 deletions

diff --git a/src/lib/libcrypto/rand/rand.h b/src/lib/libcrypto/rand/rand.h
index e17aa7a9f7..66e39991ec 100644
--- a/src/lib/libcrypto/rand/rand.h
+++ b/src/lib/libcrypto/rand/rand.h
@@ -61,6 +61,11 @@
 
 #include <stdlib.h>
 #include <openssl/ossl_typ.h>
+#include <openssl/e_os2.h>
+
+#if defined(OPENSSL_SYS_WINDOWS)
+#include <windows.h>
+#endif
 
 #ifdef  __cplusplus
 extern "C" {