diff --git a/docs/man/activator.pod b/docs/man/activator.pod
index 49a7ad045..76da9f628 100644
--- a/docs/man/activator.pod
+++ b/docs/man/activator.pod
@@ -28,6 +28,9 @@ B<activator> --version
 
 B<ETP_REPO>=valid repository id: on-the-fly switch default Entropy repository.
 
+B<ETP_EXPIRATION_DAYS>=valid number: on-the-fly removed packages expiration days
+setting.
+
 =head1 BUGS
 
 Please report bugs to http://bugs.sabayonlinux.org.
diff --git a/docs/man/man1/activator.1 b/docs/man/man1/activator.1
index c7373b509..43fcce7c5 100644
--- a/docs/man/man1/activator.1
+++ b/docs/man/man1/activator.1
@@ -159,6 +159,9 @@
 .SH "ENVIRONMENT"
 .IX Header "ENVIRONMENT"
 \&\fB\s-1ETP_REPO\s0\fR=valid repository id: on-the-fly switch default Entropy repository.
+.PP
+\&\fB\s-1ETP_EXPIRATION_DAYS\s0\fR=valid number: on-the-fly removed packages expiration days
+setting.
 .SH "BUGS"
 .IX Header "BUGS"
 Please report bugs to http://bugs.sabayonlinux.org.