diff --git a/crypto/rand/md_rand.c b/crypto/rand/md_rand.c
index f47fc2ba8459e947f68322b269e1e5125f8da71f..0a5037464f659665bea986d7f96f8550378486ae 100644
--- a/crypto/rand/md_rand.c
+++ b/crypto/rand/md_rand.c
@@ -127,6 +127,7 @@
 #include <openssl/crypto.h>
 #include <openssl/err.h>
 #include <openssl/evp.h>
+#include <openssl/sha.h>
 
 #ifdef BN_DEBUG
 # define PREDICT