diff -ru -x '*~' openssl-1.0.1r-orig/crypto/cryptlib.h openssl-1.0.1r/crypto/cryptlib.h
--- openssl-1.0.1r-orig/crypto/cryptlib.h	2016-01-28 14:38:30.000000000 +0100
+++ openssl-1.0.1r/crypto/cryptlib.h	2016-02-03 12:54:29.193165176 +0100
@@ -81,8 +81,8 @@
 
 # ifndef OPENSSL_SYS_VMS
 #  define X509_CERT_AREA          OPENSSLDIR
 #  define X509_CERT_DIR           OPENSSLDIR "/certs"
-#  define X509_CERT_FILE          OPENSSLDIR "/cert.pem"
+#  define X509_CERT_FILE          "/nix/var/nix/profiles/default/etc/ssl/certs/ca-bundle.crt"
 #  define X509_PRIVATE_DIR        OPENSSLDIR "/private"
 # else
 #  define X509_CERT_AREA          "SSLROOT:[000000]"