Index: sys/opencrypto/crypto.c
===================================================================
--- sys/opencrypto/crypto.c
+++ sys/opencrypto/crypto.c
@@ -460,7 +460,7 @@
 			CRYPTDEB("dev newsession failed");
 	} else {
 		CRYPTDEB("no driver");
-		err = EINVAL;
+		err = EOPNOTSUPP;
 	}
 	CRYPTO_DRIVER_UNLOCK();
 	return err;
Index: tests/sys/opencrypto/cryptotest.py
===================================================================
--- tests/sys/opencrypto/cryptotest.py
+++ tests/sys/opencrypto/cryptotest.py
@@ -30,6 +30,7 @@
 #
 
 from __future__ import print_function
+import errno
 import cryptodev
 import itertools
 import os
@@ -284,8 +285,14 @@
 					if len(key) > blocksize:
 						continue
 
-					c = Crypto(mac=alg, mackey=key,
-					    crid=crid)
+					try:
+						c = Crypto(mac=alg, mackey=key,
+						    crid=crid)
+					except EnvironmentError, e:
+						# Can't test hashes the driver does not support.
+						if e.errno != errno.EOPNOTSUPP:
+							raise
+						continue
 
 					_, r = c.encrypt(msg, iv="")