diff --git a/scripts/install b/scripts/install
index 69288af..f15501a 100755
--- a/scripts/install
+++ b/scripts/install
@@ -128,6 +128,8 @@ sudo cp ../conf/logging /etc/$app/
 sudo cp ../conf/rights /etc/$app/
 sudo sed -i "s@__PATH__@$path@g" /etc/$app/config
 sudo sed -i "s@__FINALPATH__@$final_path@g" /etc/$app/config
+sudo yunohost app setting $app config_file_md5 -v $(md5sum "/etc/$app/config" | cut -d' ' -f1)
+sudo yunohost app setting $app logging_file_md5 -v $(md5sum "/etc/$app/logging" | cut -d' ' -f1)
 if [ "$infcloud" = "1" ]
 then	#Configuration InfCloud
 	# Détermine la langue
@@ -170,6 +172,7 @@ then	#Configuration InfCloud
 	sudo sed -i "s@__LANG__@$language@g" "$final_path/infcloud/config.js"
 	sudo sed -i "s@__ADMIN__@$admin@g" "$final_path/infcloud/config.js"
 	sudo sed -i "s@__TIMEZONE__@$(cat /etc/timezone)@g" "$final_path/infcloud/config.js"
+	sudo yunohost app setting $app config.js_file_md5 -v $(md5sum "$final_path/infcloud/config.js" | cut -d' ' -f1)
 fi
 
 # Set permissions to radicale directory
diff --git a/scripts/upgrade b/scripts/upgrade
index 04dd906..a903e02 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -55,7 +55,15 @@ then	#Instal InfCloud
 fi
 
 # Radicale configuration
+config_file="/etc/$app/config"
+if [ "$(sudo yunohost app setting $app config_file_md5)" != $(md5sum "$config_file" | cut -d' ' -f1) ]; then
+	sudo cp -a "$config_file" "$config_file.backup.$(date '+%d.%m.%y_%Hh%M,%Ss')"	# Si le fichier de config a été modifié, créer un backup.
+fi
 sudo cp ../conf/config /etc/$app/
+config_file="/etc/$app/logging"
+if [ "$(sudo yunohost app setting $app logging_file_md5)" != $(md5sum "$config_file" | cut -d' ' -f1) ]; then
+	sudo cp -a "$config_file" "$config_file.backup.$(date '+%d.%m.%y_%Hh%M,%Ss')"	# Si le fichier de config a été modifié, créer un backup.
+fi
 sudo cp ../conf/logging /etc/$app/
 sudo sed -i "s@__PATH__@$path@g" /etc/$app/config
 sudo sed -i "s@__FINALPATH__@$path@g" /etc/$app/config
@@ -95,6 +103,10 @@ then	#Configuration InfCloud
 		;;
 	esac
 	sudo yunohost app setting $app language -v $language
+	config_file="$final_path/infcloud/config.js"
+	if [ "$(sudo yunohost app setting $app config.js_file_md5)" != $(md5sum "$config_file" | cut -d' ' -f1) ]; then
+		sudo cp -a "$config_file" "$config_file.backup.$(date '+%d.%m.%y_%Hh%M,%Ss')"	# Si le fichier de config a été modifié, créer un backup.
+	fi
 	sudo cp ../conf/config.js "$final_path/infcloud/"
 	sudo sed -i "s@__DOMAIN__@$domain@g" "$final_path/infcloud/config.js"
 	sudo sed -i "s@__PATH__@$path@g" "$final_path/infcloud/config.js"