diff --git a/sbin/dumpon/dumpon.c b/sbin/dumpon/dumpon.c
--- a/sbin/dumpon/dumpon.c
+++ b/sbin/dumpon/dumpon.c
@@ -566,7 +566,12 @@
 	if (cipher != KERNELDUMP_ENC_NONE && pubkeyfile == NULL) {
 		errx(EX_USAGE, "-C option requires a public key file.");
 	} else if (pubkeyfile != NULL) {
+#if OPENSSL_VERSION_NUMBER < 0x10100000L
 		ERR_load_crypto_strings();
+#else
+		if (!OPENSSL_init_crypto(0, NULL))
+			errx(EX_UNAVAILABLE, "Unable to initialize OpenSSL");
+#endif
 	}
 #else
 	if (pubkeyfile != NULL)