diff --git a/scripts/install b/scripts/install
index 6748f89..3d8a8e1 100644
--- a/scripts/install
+++ b/scripts/install
@@ -77,7 +77,7 @@ ynh_app_setting_set $app version ${version:0:1}
 # Augmentation du nombre maximum de fichiers surveillés par inotify.
 cp -a ../conf/90-inotify_minidlna.conf /etc/sysctl.d/
 # Et rechargement de la config du noyau.
-if IS_PACKAGE_CHECK; then
+if ! IS_PACKAGE_CHECK; then
 	sysctl -p /etc/sysctl.d/90-inotify_minidlna.conf
 fi
 
diff --git a/scripts/remove b/scripts/remove
index 5984fad..b3ffe7f 100755
--- a/scripts/remove
+++ b/scripts/remove
@@ -56,7 +56,7 @@ if [ -e "/etc/sysctl.d/90-inotify_minidlna.conf" ]; then
 	ynh_print_info "Delete kernel config" >&2
 	ynh_secure_remove "/etc/sysctl.d/90-inotify_minidlna.conf"
 	# Et rechargement de la config du noyau.
-	if IS_PACKAGE_CHECK; then
+	if ! IS_PACKAGE_CHECK; then
 		sysctl -p /etc/sysctl.d/90-inotify_minidlna.conf
 	fi
 fi
diff --git a/scripts/restore b/scripts/restore
index e58869a..341f15c 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -68,7 +68,7 @@ fi
 #=================================================
 
 ynh_restore_file "/etc/sysctl.d/90-inotify_minidlna.conf"
-if IS_PACKAGE_CHECK; then
+if ! IS_PACKAGE_CHECK; then
 	sysctl -p /etc/sysctl.d/90-inotify_minidlna.conf
 fi
 
diff --git a/scripts/upgrade b/scripts/upgrade
index d33cafc..af817c7 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -68,7 +68,7 @@ fi
 # Augmentation du nombre maximum de fichiers surveillés par inotify.
 cp -a ../conf/90-inotify_minidlna.conf /etc/sysctl.d/
 # Et rechargement de la config du noyau.
-if IS_PACKAGE_CHECK; then
+if ! IS_PACKAGE_CHECK; then
 	sysctl -p /etc/sysctl.d/90-inotify_minidlna.conf
 fi