diff --git a/src/pki_container_openssh.c b/src/pki_container_openssh.c
index 705cd19a..f7ec0f4c 100644
--- a/src/pki_container_openssh.c
+++ b/src/pki_container_openssh.c
@@ -701,7 +701,7 @@ ssh_string ssh_pki_openssh_privkey_export(const ssh_key privkey,
     str_len = ssh_buffer_get_len(buffer);
     len = ssh_buffer_get_data(buffer, ssh_string_data(str), str_len);
     if (str_len != len) {
-        ssh_string_free(str);
+        SSH_STRING_FREE(str);
         str = NULL;
     }