diff --git a/Tester/NetteTestCase.php b/Tester/NetteTestCase.php
index df273166..5e30d198 100644
--- a/Tester/NetteTestCase.php
+++ b/Tester/NetteTestCase.php
@@ -284,6 +284,7 @@ public static function compare($left, $right)
 			'%d?%'=> '[0-9]*',      // zero or more digits
 			'%i%' => '[+-]?[0-9]+', // signed integer value
 			'%f%' => '[+-]?\.?\d+\.?\d*(?:[Ee][+-]?\d+)?', // floating point number
+			'%h%' => '[0-9a-fA-F]+',// one or more HEX digits
 			'%[^' => '[^',          // reg-exp
 			'%['  => '[',           // reg-exp
 			']%'  => ']+',          // reg-exp
diff --git a/Tester/conventions.txt b/Tester/conventions.txt
index e5db8615..18e91462 100644
--- a/Tester/conventions.txt
+++ b/Tester/conventions.txt
@@ -44,6 +44,7 @@ PHP (All test cases are valid PHP files)
 		%d?%   zero or more digits
 		%i%    signed integer value
 		%f%    floating point number
+		%h%    one or more HEX digits
 		%[..]% reg-exp
 
 
diff --git a/Tester/initialize.php b/Tester/initialize.php
index 9bf2481a..193091bd 100644
--- a/Tester/initialize.php
+++ b/Tester/initialize.php
@@ -203,6 +203,9 @@ public static function dump(& $var, $level = 0)
 			}
 			echo "\n";
 
+		} elseif ($var instanceof Exception) {
+			echo 'Exception ', get_class($var), ': ', ($var->getCode() ? '#' . $var->getCode() . ' ' : '') . $var->getMessage(), "\n";
+
 		} elseif (is_object($var)) {
 			$arr = (array) $var;
 			echo "object(" . get_class($var) . ") (" . count($arr) . ") ";