diff --git a/src/resolve/resolvectl.c b/src/resolve/resolvectl.c
index f8372d5e83..1ac4683c5f 100644
--- a/src/resolve/resolvectl.c
+++ b/src/resolve/resolvectl.c
@@ -919,7 +919,7 @@ static int resolve_openpgp(sd_bus *bus, const char *address) {
                            arg_type ?: DNS_TYPE_OPENPGPKEY, false);
 
         if (IN_SET(r, -ENXIO, -ESRCH)) { /* NXDOMAIN or NODATA? */
-              hashed = NULL;
+              hashed = mfree(hashed);
               r = string_hashsum_sha224(address, domain - 1 - address, &hashed);
               if (r < 0)
                     return log_error_errno(r, "Hashing failed: %m");