diff --git a/src/veritysetup/veritysetup-generator.c b/src/veritysetup/veritysetup-generator.c
index 33d803cd07..338cad4228 100644
--- a/src/veritysetup/veritysetup-generator.c
+++ b/src/veritysetup/veritysetup-generator.c
@@ -22,7 +22,7 @@
 
 #define SYSTEMD_VERITYSETUP_SERVICE "systemd-veritysetup@root.service"
 
-static char *arg_dest = NULL;
+static const char *arg_dest = NULL;
 static bool arg_enabled = true;
 static char *arg_root_hash = NULL;
 static char *arg_data_what = NULL;