diff --git a/htdocs/accountancy/class/accountancycategory.class.php b/htdocs/accountancy/class/accountancycategory.class.php
index f11ff3957f7..d68c9fa54a7 100644
--- a/htdocs/accountancy/class/accountancycategory.class.php
+++ b/htdocs/accountancy/class/accountancycategory.class.php
@@ -14,7 +14,7 @@
  * 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/class/accountancyexport.class.php b/htdocs/accountancy/class/accountancyexport.class.php
index 3169d3737d9..06bb3e5c930 100644
--- a/htdocs/accountancy/class/accountancyexport.class.php
+++ b/htdocs/accountancy/class/accountancyexport.class.php
@@ -22,7 +22,7 @@
  * 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/class/accountancysystem.class.php b/htdocs/accountancy/class/accountancysystem.class.php
index 580ecda0b50..67f4f3b31a4 100644
--- a/htdocs/accountancy/class/accountancysystem.class.php
+++ b/htdocs/accountancy/class/accountancysystem.class.php
@@ -14,7 +14,7 @@
  * 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/class/accountingaccount.class.php b/htdocs/accountancy/class/accountingaccount.class.php
index bc25e33484d..f9c2e3391ba 100644
--- a/htdocs/accountancy/class/accountingaccount.class.php
+++ b/htdocs/accountancy/class/accountingaccount.class.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/class/accountingjournal.class.php b/htdocs/accountancy/class/accountingjournal.class.php
index e8caaab8a89..8d6f037dc96 100644
--- a/htdocs/accountancy/class/accountingjournal.class.php
+++ b/htdocs/accountancy/class/accountingjournal.class.php
@@ -12,7 +12,7 @@
  * 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/class/bookkeeping.class.php b/htdocs/accountancy/class/bookkeeping.class.php
index 27aee939594..d207fbccc74 100644
--- a/htdocs/accountancy/class/bookkeeping.class.php
+++ b/htdocs/accountancy/class/bookkeeping.class.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/class/lettering.class.php b/htdocs/accountancy/class/lettering.class.php
index 2a89c6c1c96..e20b49dbd25 100644
--- a/htdocs/accountancy/class/lettering.class.php
+++ b/htdocs/accountancy/class/lettering.class.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/>.
  */
 
 /**