diff --git a/inc/field/requesttypefield.class.php b/inc/field/requesttypefield.class.php
index 7dcf66deb..7072c5554 100644
--- a/inc/field/requesttypefield.class.php
+++ b/inc/field/requesttypefield.class.php
@@ -173,7 +173,15 @@ public function isValidValue($value): bool {
    }
 
    public function equals($value): bool {
+      global $TRANSLATE;
+
+      $oldLocale = $TRANSLATE->getLocale();
+      $TRANSLATE->setLocale("en_GB");
+      $_SESSION['glpilanguage'] = "en_GB";
       $available = $this->getAvailableValues();
+      $TRANSLATE->setLocale($oldLocale);
+      $_SESSION['glpilanguage'] = $oldLocale;
+
       if (!isset($available[$this->value])) {
          return false;
       }
@@ -181,7 +189,15 @@ public function equals($value): bool {
    }
 
    public function notEquals($value): bool {
+      global $TRANSLATE;
+
+      $oldLocale = $TRANSLATE->getLocale();
+      $TRANSLATE->setLocale("en_GB");
+      $_SESSION['glpilanguage'] = "en_GB";
       $available = $this->getAvailableValues();
+      $TRANSLATE->setLocale($oldLocale);
+      $_SESSION['glpilanguage'] = $oldLocale;
+
       if (!isset($available[$this->value])) {
          return false;
       }
@@ -189,7 +205,15 @@ public function notEquals($value): bool {
    }
 
    public function greaterThan($value): bool {
+      global $TRANSLATE;
+
+      $oldLocale = $TRANSLATE->getLocale();
+      $TRANSLATE->setLocale("en_GB");
+      $_SESSION['glpilanguage'] = "en_GB";
       $available = $this->getAvailableValues();
+      $TRANSLATE->setLocale($oldLocale);
+      $_SESSION['glpilanguage'] = $oldLocale;
+
       if (!isset($available[$this->value])) {
          return false;
       }
@@ -197,7 +221,15 @@ public function greaterThan($value): bool {
    }
 
    public function lessThan($value): bool {
+      global $TRANSLATE;
+
+      $oldLocale = $TRANSLATE->getLocale();
+      $TRANSLATE->setLocale("en_GB");
+      $_SESSION['glpilanguage'] = "en_GB";
       $available = $this->getAvailableValues();
+      $TRANSLATE->setLocale($oldLocale);
+      $_SESSION['glpilanguage'] = $oldLocale;
+
       if (!isset($available[$this->value])) {
          return false;
       }