diff --git a/NEWS b/NEWS
index 316893b..e95092c 100644
--- a/NEWS
+++ b/NEWS
@@ -15,6 +15,9 @@ Unreleased, experimental changes
     (Thanks to Theo Veenker for reporting the problem, for MinGW.)
     Also, fix some bugs on platforms that lack hard links but have symlinks.
 
+    'zic -v' again warns that Asia/Tehran has no POSIX environment variable
+    to predict the far future, fixing a bug introduced in 2013e.
+
   Changes affecting the build procedure
 
     The 'leapseconds' file is again put into the tzdata tarball.
diff --git a/zic.c b/zic.c
index dcf51e2..e7b0081 100644
--- a/zic.c
+++ b/zic.c
@@ -2099,12 +2099,12 @@ outzone(const struct zone * const zpfirst, const int zonecount)
 	compat = stringzone(envvar, zpfirst, zonecount);
 	version = compat < 2013 ? ZIC_VERSION_PRE_2013 : ZIC_VERSION;
 	do_extend = compat < 0 || compat == YEAR_BY_YEAR_ZONE;
-	if (noise && compat != 0 && compat != YEAR_BY_YEAR_ZONE) {
-		if (compat < 0)
+	if (noise) {
+		if (!*envvar)
 			warning("%s %s",
 				_("no POSIX environment variable for zone"),
 				zpfirst->z_name);
-		else {
+		else if (compat != 0 && compat != YEAR_BY_YEAR_ZONE) {
 			/* Circa-COMPAT clients, and earlier clients, might
 			   not work for this zone when given dates before
 			   1970 or after 2038.  */