diff --git a/lib/luks2/luks2_keyslot.c b/lib/luks2/luks2_keyslot.c
index efb4cd2c..90725709 100644
--- a/lib/luks2/luks2_keyslot.c
+++ b/lib/luks2/luks2_keyslot.c
@@ -165,7 +165,7 @@ int LUKS2_keyslot_cipher_incompatible(struct crypt_device *cd, const char *ciphe
 {
 	char cipher[MAX_CIPHER_LEN], cipher_mode[MAX_CIPHER_LEN];
 
-	if (!cipher_spec || crypt_is_cipher_null(cipher_spec))
+	if (!cipher_spec)
 		return 1;
 
 	/*