diff --git a/client/src/emv/emv_pki_priv.c b/client/src/emv/emv_pki_priv.c
index d14e0b6ef..383f3d7f5 100644
--- a/client/src/emv/emv_pki_priv.c
+++ b/client/src/emv/emv_pki_priv.c
@@ -57,7 +57,7 @@ struct emv_pk *emv_pki_make_ca(const struct crypto_pk *cp,
     struct crypto_hash *ch = crypto_hash_open(pk->hash_algo);
     if (!ch) {
         emv_pk_free(pk);
-        return false;
+        return NULL;
     }
 
     crypto_hash_write(ch, pk->rid, sizeof(pk->rid));