diff --git a/status.c b/status.c
index a8fe2032..c673860a 100644
--- a/status.c
+++ b/status.c
@@ -1497,6 +1497,7 @@ status_prompt_complete(struct session *session, const char *s)
 		out = status_prompt_complete_prefix(list, size);
 	if (out != NULL) {
 		xasprintf(&tmp, "-%c%s%s", copy[1], out, colon);
+		free(out);
 		out = tmp;
 		goto found;
 	}