diff --git a/htdocs/accountancy/bookkeeping/balance.php b/htdocs/accountancy/bookkeeping/balance.php
index 44a12b76f36..ef966a00455 100644
--- a/htdocs/accountancy/bookkeeping/balance.php
+++ b/htdocs/accountancy/bookkeeping/balance.php
@@ -15,7 +15,7 @@
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
  *
  */
 
diff --git a/htdocs/accountancy/bookkeeping/balancebymonth.php b/htdocs/accountancy/bookkeeping/balancebymonth.php
index b9568228a36..a537983ed92 100644
--- a/htdocs/accountancy/bookkeeping/balancebymonth.php
+++ b/htdocs/accountancy/bookkeeping/balancebymonth.php
@@ -15,7 +15,7 @@
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
  *
  */
 
diff --git a/htdocs/accountancy/bookkeeping/card.php b/htdocs/accountancy/bookkeeping/card.php
index b0adb2e2ad1..d91069ce93e 100644
--- a/htdocs/accountancy/bookkeeping/card.php
+++ b/htdocs/accountancy/bookkeeping/card.php
@@ -16,7 +16,7 @@
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
  */
 
 /**
diff --git a/htdocs/accountancy/bookkeeping/list.php b/htdocs/accountancy/bookkeeping/list.php
index 4fc30bb0c30..ff7cccca341 100644
--- a/htdocs/accountancy/bookkeeping/list.php
+++ b/htdocs/accountancy/bookkeeping/list.php
@@ -16,7 +16,7 @@
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
  */
 
 /**
diff --git a/htdocs/accountancy/bookkeeping/listbyaccount.php b/htdocs/accountancy/bookkeeping/listbyaccount.php
index bacfdcb714a..d3dc9b4a190 100644
--- a/htdocs/accountancy/bookkeeping/listbyaccount.php
+++ b/htdocs/accountancy/bookkeeping/listbyaccount.php
@@ -16,7 +16,7 @@
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
  */
 
 /**
diff --git a/htdocs/accountancy/bookkeeping/thirdparty_lettering_customer.php b/htdocs/accountancy/bookkeeping/thirdparty_lettering_customer.php
index 81754d121b9..b7a19101758 100644
--- a/htdocs/accountancy/bookkeeping/thirdparty_lettering_customer.php
+++ b/htdocs/accountancy/bookkeeping/thirdparty_lettering_customer.php
@@ -17,7 +17,7 @@
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
  *
  */
 
diff --git a/htdocs/accountancy/bookkeeping/thirdparty_lettering_supplier.php b/htdocs/accountancy/bookkeeping/thirdparty_lettering_supplier.php
index 87bd79bb64d..eaa741e1722 100644
--- a/htdocs/accountancy/bookkeeping/thirdparty_lettering_supplier.php
+++ b/htdocs/accountancy/bookkeeping/thirdparty_lettering_supplier.php
@@ -17,7 +17,7 @@
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
  */
 
 /**