diff --git a/plugins/bcli.c b/plugins/bcli.c
index bc681697c..4411a7716 100644
--- a/plugins/bcli.c
+++ b/plugins/bcli.c
@@ -179,9 +179,9 @@ static char *args_string(const tal_t *ctx, const char **args)
 	return ret;
 }
 
-static char *bcli_args(struct bitcoin_cli *bcli)
+static char *bcli_args(const tal_t *ctx, struct bitcoin_cli *bcli)
 {
-    return args_string(bcli, bcli->args);
+    return args_string(ctx, bcli->args);
 }
 
 /* Only set as destructor once bcli is in current. */
@@ -216,7 +216,7 @@ static void bcli_failure(struct bitcoin_cli *bcli,
 		           "we have been retrying command for "
 		           "--bitcoin-retry-timeout=%"PRIu64" seconds; "
 		           "bitcoind setup or our --bitcoin-* configs broken?",
-		           bcli_args(bcli),
+		           bcli_args(tmpctx, bcli),
 		           exitstatus,
 		           bitcoind->error_count,
 		           (int)bcli->output_bytes,
@@ -224,7 +224,7 @@ static void bcli_failure(struct bitcoin_cli *bcli,
 		           bitcoind->retry_timeout);
 
 	plugin_log(bcli->cmd->plugin, LOG_UNUSUAL, "%s exited with status %u",
-		   bcli_args(bcli), exitstatus);
+		   bcli_args(tmpctx, bcli), exitstatus);
 	bitcoind->error_count++;
 
 	/* Retry in 1 second */
@@ -242,19 +242,19 @@ static void bcli_finished(struct io_conn *conn UNUSED, struct bitcoin_cli *bcli)
 	if (msec > 10000)
 		plugin_log(bcli->cmd->plugin, LOG_UNUSUAL,
 		           "bitcoin-cli: finished %s (%"PRIu64" ms)",
-		           bcli_args(bcli), msec);
+		           bcli_args(tmpctx, bcli), msec);
 
 	assert(bitcoind->num_requests[prio] > 0);
 
 	/* FIXME: If we waited for SIGCHILD, this could never hang! */
 	while ((ret = waitpid(bcli->pid, &status, 0)) < 0 && errno == EINTR);
 	if (ret != bcli->pid)
-		plugin_err(bcli->cmd->plugin, "%s %s", bcli_args(bcli),
+		plugin_err(bcli->cmd->plugin, "%s %s", bcli_args(tmpctx, bcli),
 		           ret == 0 ? "not exited?" : strerror(errno));
 
 	if (!WIFEXITED(status))
 		plugin_err(bcli->cmd->plugin, "%s died with signal %i",
-		           bcli_args(bcli),
+		           bcli_args(tmpctx, bcli),
 		           WTERMSIG(status));
 
 	/* Implicit nonzero_exit_ok == false */
@@ -380,7 +380,7 @@ static struct command_result *command_err_bcli_badjson(struct bitcoin_cli *bcli,
 						       const char *errmsg)
 {
 	char *err = tal_fmt(bcli, "%s: bad JSON: %s (%.*s)",
-			    bcli_args(bcli), errmsg,
+			    bcli_args(tmpctx, bcli), errmsg,
 			    (int)bcli->output_bytes, bcli->output);
 	return command_done_err(bcli->cmd, BCLI_ERROR, err, NULL);
 }
@@ -537,7 +537,7 @@ static struct command_result *process_sendrawtransaction(struct bitcoin_cli *bcl
 	if (bcli->exitstatus)
 		plugin_log(bcli->cmd->plugin, LOG_DBG,
 			   "sendrawtx exit %i (%s) %.*s",
-			   *bcli->exitstatus, bcli_args(bcli),
+			   *bcli->exitstatus, bcli_args(tmpctx, bcli),
 			   *bcli->exitstatus ?
 				(u32)bcli->output_bytes-1 : 0,
 				bcli->output);