--- a/debian/changelog	Wed Aug 12 20:20:48 2015 +0200
+++ b/debian/changelog	Wed Aug 12 20:25:19 2015 +0200
@@ -1,3 +1,9 @@
+schlittermann-ssh-keys (0.27) UNRELEASED; urgency=medium
+
+  * postinst: fix 
+
+ -- Heiko Schlittermann (HS12-RIPE) <hs@schlittermann.de>  Wed, 12 Aug 2015 20:25:01 +0200
+
 schlittermann-ssh-keys (0.26) stable oldstable; urgency=medium
 
   * Force overwriting the .bak file if non-interative:

--- a/debian/postinst	Wed Aug 12 20:20:48 2015 +0200
+++ b/debian/postinst	Wed Aug 12 20:25:19 2015 +0200
@@ -28,10 +28,11 @@
     rm -f $tmp
 }
 
-add_sshd_env() {
-    var="$1"
+need_sshd_env() {
+    tmp="$1"
+    var="$2"
     grep -q '^AcceptEnv[[:space:]]\+.*\<'"$var"'\>' /etc/ssh/sshd_config \
-	|| echo "AcceptEnv $var" >> /etc/ssh/sshd_config
+	|| echo "AcceptEnv $var" >> $tmp
 }
 
 update_sshd_config() {