diff --git a/doc/Changelog b/doc/Changelog
index 089c4de65..3b9845c4d 100644
--- a/doc/Changelog
+++ b/doc/Changelog
@@ -1,3 +1,6 @@
+29 July 2019: Wouter
+	- Add verbose log message when auth zone file is written, at level 4.
+
 23 July 2019: Wouter
 	- Fix question section mismatch in local zone redirect.
 
diff --git a/services/authzone.c b/services/authzone.c
index 312abad8b..523a2cdca 100644
--- a/services/authzone.c
+++ b/services/authzone.c
@@ -4867,6 +4867,11 @@ xfr_write_after_update(struct auth_xfer* xfr, struct module_env* env)
 	if(cfg->chrootdir && cfg->chrootdir[0] && strncmp(zfilename,
 		cfg->chrootdir, strlen(cfg->chrootdir)) == 0)
 		zfilename += strlen(cfg->chrootdir);
+	if(verbosity >= VERB_ALGO) {
+		char nm[255+1];
+		dname_str(z->name, nm);
+		verbose(VERB_ALGO, "write zonefile %s for %s", zfilename, nm);
+	}
 
 	/* write to tempfile first */
 	if((size_t)strlen(zfilename) + 16 > sizeof(tmpfile)) {