diff --git a/debian/postinst b/debian/postinst
index 13083c0..7bd6f58 100644
--- a/debian/postinst
+++ b/debian/postinst
@@ -17,9 +17,17 @@ while true; do
 		then
 			if [ -f /etc/pam.d/common-session ]
 			then
-				cp /etc/pam.d/common-session /etc/pam.d/common-session.orig
-				sed -i '/pam_script.so/d' /etc/pam.d/common-session
-				echo "session required		pam_script.so"  >> /etc/pam.d/common-session
+				cp -f /etc/pam.d/common-session /etc/pam.d/common-session.orig
+				grep -q 'pam_script.so' /etc/pam.d/common-session
+				if [ $? -eq 0 ]
+				then
+					echo "pam_scripst.so zaten mevcut."
+				else
+					echo "pam_script.so bulunamadı! /etc/pam.d/common-session dosyasına ekleniyor..."
+					# Use optional, we don't want access denied if there is a problem:
+					echo "session optional		pam_script.so"  >> /etc/pam.d/common-session
+					echo "pam_script.so eklendi."
+				fi
 			fi
 		fi
 	break;;
diff --git a/debian/postrm b/debian/postrm
index a55d27a..811f6f1 100644
--- a/debian/postrm
+++ b/debian/postrm
@@ -2,5 +2,6 @@
 # postrm script for ahenk
 #
 
-cp /etc/pam.d/common-session /etc/pam.d/common-session.before_remove_ahenk
-cp /etc/pam.d/common-session.orig /etc/pam.d/common-session
+if [ -f /etc/pam.d/common-session.orig ]; then
+   mv -f /etc/pam.d/common-session.orig /etc/pam.d/common-session
+fi
diff --git a/debian/prerm b/debian/prerm
index b6a35a6..98d9f8a 100644
--- a/debian/prerm
+++ b/debian/prerm
@@ -3,3 +3,4 @@
 #
 
 find /opt/ahenk | grep -E "(__pycache__|\.pyc|\.pyo$)" | xargs rm -rf
+rm -f /etc/ahenk/ahenk.db