diff --git a/sway/main.c b/sway/main.c
index 5a65e50cf..6754190f9 100644
--- a/sway/main.c
+++ b/sway/main.c
@@ -126,6 +126,7 @@ void run_as_ipc_client(char *command, char *socket_path) {
 	uint32_t len = strlen(command);
 	char *resp = ipc_single_command(socketfd, IPC_COMMAND, command, &len);
 	printf("%s\n", resp);
+	free(resp);
 	close(socketfd);
 }