diff --git a/libraries/Error.class.php b/libraries/Error.class.php
index eb8d2f001e..e972f67412 100644
--- a/libraries/Error.class.php
+++ b/libraries/Error.class.php
@@ -152,7 +152,11 @@ class PMA_Error extends PMA_Message
      */
     public function getHash()
     {
-        $backtrace = PMA_isSerializable($this->getBacktrace()) ? serialize($this->getBacktrace()) : '';
+        try {
+            $backtrace = serialize($this->getBacktrace());
+        } catch(Exception $e){
+            $backtrace = '';
+        }
         if (null === $this->_hash) {
             $this->_hash = md5(
                 $this->getNumber() .
diff --git a/libraries/common.lib.php b/libraries/common.lib.php
index 192c4d11ca..4e2b8d0ec0 100644
--- a/libraries/common.lib.php
+++ b/libraries/common.lib.php
@@ -3832,21 +3832,4 @@ function PMA_printButton()
     echo '<input type="button" id="print" value="' . __('Print') . '" />';
     echo '</p>';
 }
-
-/**
- * Determines whether a variable is serializable.
- *
- * @param object $var object which needs to be checked for serializability
- *
- * @return whether the object is serializable.
- */
-function PMA_isSerializable($var)
-{
-    try {
-        serialize($var);
-        return true;
-    } catch(Exception $e) {
-        return false;
-    }
-}
 ?>