diff --git a/src/busctl/busctl.c b/src/busctl/busctl.c
index b677ac0177..1d719e0e78 100644
--- a/src/busctl/busctl.c
+++ b/src/busctl/busctl.c
@@ -36,7 +36,7 @@ static bool arg_activatable = false;
 static bool arg_show_machine = false;
 static char **arg_matches = NULL;
 static BusTransport arg_transport = BUS_TRANSPORT_LOCAL;
-static char *arg_host = NULL;
+static const char *arg_host = NULL;
 static bool arg_user = false;
 static size_t arg_snaplen = 4096;
 static bool arg_list = false;