diff --git a/htdocs/core/modules/modBookCal.class.php b/htdocs/core/modules/modBookCal.class.php
index c7253d7f7f6..8163d1b696d 100644
--- a/htdocs/core/modules/modBookCal.class.php
+++ b/htdocs/core/modules/modBookCal.class.php
@@ -259,32 +259,32 @@ class modBookCal extends DolibarrModules
 		$r = 0;
 		// Add here entries to declare new permissions
 		/* BEGIN MODULEBUILDER PERMISSIONS */
-		$this->rights[$r][0] = $this->numero . sprintf('%02d', (0 * 10) + 0 + 1);
+		$this->rights[$r][0] = $this->numero . sprintf('%02d', (0 * 10) + 1);
 		$this->rights[$r][1] = 'Read objects of BookCal';
 		$this->rights[$r][4] = 'availabilities';
 		$this->rights[$r][5] = 'read';
 		$r++;
-		$this->rights[$r][0] = $this->numero . sprintf('%02d', (0 * 10) + 1 + 1);
+		$this->rights[$r][0] = $this->numero . sprintf('%02d', (0 * 10) + 2);
 		$this->rights[$r][1] = 'Create/Update objects of BookCal';
 		$this->rights[$r][4] = 'availabilities';
 		$this->rights[$r][5] = 'write';
 		$r++;
-		$this->rights[$r][0] = $this->numero . sprintf('%02d', (0 * 10) + 2 + 1);
+		$this->rights[$r][0] = $this->numero . sprintf('%02d', (0 * 10) + 3);
 		$this->rights[$r][1] = 'Delete objects of BookCal';
 		$this->rights[$r][4] = 'availabilities';
 		$this->rights[$r][5] = 'delete';
 		$r++;
-		$this->rights[$r][0] = $this->numero . sprintf('%02d', (1 * 10) + 0 + 1);
+		$this->rights[$r][0] = $this->numero . sprintf('%02d', (1 * 10) + 1);
 		$this->rights[$r][1] = 'Read Calendar object of BookCal';
 		$this->rights[$r][4] = 'calendar';
 		$this->rights[$r][5] = 'read';
 		$r++;
-		$this->rights[$r][0] = $this->numero . sprintf('%02d', (1 * 10) + 1 + 1);
+		$this->rights[$r][0] = $this->numero . sprintf('%02d', (1 * 10) + 2);
 		$this->rights[$r][1] = 'Create/Update Calendar object of BookCal';
 		$this->rights[$r][4] = 'calendar';
 		$this->rights[$r][5] = 'write';
 		$r++;
-		$this->rights[$r][0] = $this->numero . sprintf('%02d', (1 * 10) + 2 + 1);
+		$this->rights[$r][0] = $this->numero . sprintf('%02d', (1 * 10) + 3);
 		$this->rights[$r][1] = 'Delete Calendar object of BookCal';
 		$this->rights[$r][4] = 'calendar';
 		$this->rights[$r][5] = 'delete';
diff --git a/htdocs/modulebuilder/template/core/modules/modMyModule.class.php b/htdocs/modulebuilder/template/core/modules/modMyModule.class.php
index a21bca32899..cbaa07c1079 100644
--- a/htdocs/modulebuilder/template/core/modules/modMyModule.class.php
+++ b/htdocs/modulebuilder/template/core/modules/modMyModule.class.php
@@ -271,17 +271,17 @@ class modMyModule extends DolibarrModules
 		/* BEGIN MODULEBUILDER PERMISSIONS */
 		/*
 		$o = 1;
-		$this->rights[$r][0] = $this->numero . sprintf("%02d", $r + $o); // Permission id (must not be already used)
+		$this->rights[$r][0] = $this->numero . sprintf("%02d", ($o * 10) + 1); // Permission id (must not be already used)
 		$this->rights[$r][1] = 'Read objects of MyModule'; // Permission label
 		$this->rights[$r][4] = 'myobject';
 		$this->rights[$r][5] = 'read'; // In php code, permission will be checked by test if ($user->hasRight('mymodule', 'myobject', 'read'))
 		$r++;
-		$this->rights[$r][0] = $this->numero . sprintf("%02d", $r + $o); // Permission id (must not be already used)
+		$this->rights[$r][0] = $this->numero . sprintf("%02d", ($o * 10) + 2); // Permission id (must not be already used)
 		$this->rights[$r][1] = 'Create/Update objects of MyModule'; // Permission label
 		$this->rights[$r][4] = 'myobject';
 		$this->rights[$r][5] = 'write'; // In php code, permission will be checked by test if ($user->hasRight('mymodule', 'myobject', 'write'))
 		$r++;
-		$this->rights[$r][0] = $this->numero . sprintf("%02d", $r + $o); // Permission id (must not be already used)
+		$this->rights[$r][0] = $this->numero . sprintf("%02d", ($o * 10) + 3); // Permission id (must not be already used)
 		$this->rights[$r][1] = 'Delete objects of MyModule'; // Permission label
 		$this->rights[$r][4] = 'myobject';
 		$this->rights[$r][5] = 'delete'; // In php code, permission will be checked by test if ($user->rights->mymodule->myobject->delete)