1 files changed, 5 insertions, 0 deletions

diff --git a/entropy.c b/entropy.c
index 2aee2d917..1e9d52ac4 100644
--- a/entropy.c
+++ b/entropy.c
@@ -43,6 +43,8 @@
 #include <openssl/crypto.h>
 #include <openssl/err.h>
 
+#include "openbsd-compat/openssl-compat.h"
+
 #include "ssh.h"
 #include "misc.h"
 #include "xmalloc.h"
@@ -209,6 +211,9 @@ seed_rng(void)
 #ifndef OPENSSL_PRNG_ONLY
         unsigned char buf[RANDOM_SEED_SIZE];
 #endif
+        if (!ssh_compatible_openssl(OPENSSL_VERSION_NUMBER, SSLeay()))
+                fatal("OpenSSL version mismatch. Built against %lx, you "
+                    "have %lx", (u_long)OPENSSL_VERSION_NUMBER, SSLeay());
 
 #ifndef OPENSSL_PRNG_ONLY
         if (RAND_status() == 1) {