diff --git a/core/class/template.class.php b/core/class/template.class.php
index ee13f502..c7a2acc1 100644
--- a/core/class/template.class.php
+++ b/core/class/template.class.php
@@ -50,55 +50,61 @@ class template {
             'limit' => false
         ], $attributes);
 
-        // Tirage de l'opération et des nombres
-	// Correspondance tableau des images
-        $numbers = array(0,1,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,18,19,20);
-        $letters = array('u','t','s','r','q','p','o','n','m','l','k','j','i','h','g','f','e','d','c','b','a');
+   // Captcha quatre opérations
+    // Limite addition et soustraction selon le type de captcha
+    $numbers = [0,1,2,3,4,5,6,7,8,9,10,12,13,14,15,16,17,18,19,20];
+    $letters = ['u','t','s','r','q','p','o','n','m','l','k','j','i','h','g','f','e','d','c','b','a'];
+    $limit = $attributes['limit']  ? count($letters)-1 : 10;
 
-	// Détermination de la limitation
-        $limit = $attributes['limit']  ? count($letters)-1 : 10;
-        mt_srand((float) microtime()*1000000);
-        $operator = mt_rand (0, 3);
+    // Tirage de l'opération
+    mt_srand((float) microtime()*1000000);
+    $operator = mt_rand (1, 4);
 
-	// Limiter les valuers si pas une addition
-        if ($operator > 1) $limit = 10;
-        $firstNumber = mt_rand (1, $limit);
-        $secondNumber = mt_rand (1, $limit);
-
-	// Ordre des valeurs selon type d'opération
-        if (($operator < 2) AND ($firstNumber < $secondNumber)) {
-            $temp = $firstNumber;
-            $firstNumber = $secondNumber;
-            $secondNumber = $temp;
+    // Limite si multiplication ou division
+    if ($operator > 2) {
+        $limit = 10;
         }
 
-	// Calcul du résultat et icône de l'opérateur
-        switch ($operator) {
-            case 0:
-                $operator = template::ico('plus');
-                $result =  $firstNumber + $secondNumber;
-                break;
-            case 1:
-                $operator = template::ico('minus');
-                $result =  $firstNumber - $secondNumber;
-                break;
-            case 2:
-                $operator = template::ico('cancel');
-                $result =  $firstNumber * $secondNumber;
-                break;
-            case 3:
-                $operator = template::ico('divide');
-                $limit2 = [10, 10, 6, 5, 4, 3, 2, 2, 2, 2];
-                for ($i = 1; $i <= $firstNumber; $i++) {
-                    $limit = $limit2[$i-1];
-                    }
-                mt_srand((float) microtime()*1000000);
-                $secondNumber = mt_rand(1, $limit);
-                $firstNumber =  $firstNumber * $secondNumber;
-                $result = $firstNumber / $secondNumber;
-                break;
+    // Tirage des nombres
+    mt_srand((float) microtime()*1000000);
+    $firstNumber = mt_rand (1, $limit);
+    mt_srand((float) microtime()*1000000);
+    $secondNumber = mt_rand (1, $limit);
+
+    // Permutation si addition ou soustraction
+    if (($operator < 3) and ($firstNumber < $secondNumber)) {
+        $temp = $firstNumber;
+        $firstNumber = $secondNumber;
+        $secondNumber = $temp;
         }
 
+    // Icône de l'opérateur et calcul du résultat
+    switch ($operator) {
+        case 1:
+            $operator = template::ico('plus');
+            $result =  $firstNumber + $secondNumber;
+            break;
+        case 2:
+            $operator = template::ico('minus');
+            $result =  $firstNumber - $secondNumber;
+            break;
+        case 3:
+            $operator = template::ico('cancel');
+            $result =  $firstNumber * $secondNumber;
+            break;
+        case 4:
+            $operator = template::ico('divide');
+            $limit2 = [10, 10, 6, 5, 4, 3, 2, 2, 2, 2];
+            for ($i = 1; $i <= $firstNumber; $i++) {
+                $limit = $limit2[$i-1];
+                }
+            mt_srand((float) microtime()*1000000);
+            $secondNumber = mt_rand(1, $limit);
+            $firstNumber =  $firstNumber * $secondNumber;
+            $result = $firstNumber / $secondNumber;
+            break;
+    }
+
 	// Hashage du résultat
         $result = password_hash($result, PASSWORD_BCRYPT);