diff --git a/cli-authinteract.c b/cli-authinteract.c
index 7851578..a06c9ca 100644
--- a/cli-authinteract.c
+++ b/cli-authinteract.c
@@ -131,6 +131,7 @@ void recv_msg_userauth_info_request() {
 		response_len = strlen(response);
 		buf_putstring(ses.writepayload, response, response_len);
 		m_burn(response, response_len);
+		m_free(prompt);
 		m_free(response);
 	}