diff --git a/src/Exception/ChannelNotFoundInRSSException.php b/src/Exception/ChannelNotFoundInRSSException.php
new file mode 100644
index 0000000..9f4479f
--- /dev/null
+++ b/src/Exception/ChannelNotFoundInRSSException.php
@@ -0,0 +1,12 @@
+<?php
+
+namespace Shikiryu\SRSS\Exception;
+
+class ChannelNotFoundInRSSException extends SRSSException
+{
+    public function __construct($file)
+    {
+        parent::__construct(sprintf('Invalid file `%s`: <channel> not found', $file));
+    }
+
+}
\ No newline at end of file
diff --git a/src/Exception/PropertyNotFoundException.php b/src/Exception/PropertyNotFoundException.php
new file mode 100644
index 0000000..58b39b4
--- /dev/null
+++ b/src/Exception/PropertyNotFoundException.php
@@ -0,0 +1,15 @@
+<?php
+
+namespace Shikiryu\SRSS\Exception;
+
+class PropertyNotFoundException extends SRSSException
+{
+    /**
+     * @param string $class
+     * @param string $name
+     */
+    public function __construct($class, $name)
+    {
+        parent::__construct(sprintf('Property `%s` not found in `%s`', $name, $class));
+    }
+}
diff --git a/src/Exception/UnreadableRSSException.php b/src/Exception/UnreadableRSSException.php
new file mode 100644
index 0000000..ef9e3a7
--- /dev/null
+++ b/src/Exception/UnreadableRSSException.php
@@ -0,0 +1,12 @@
+<?php
+
+namespace Shikiryu\SRSS\Exception;
+
+class UnreadableRSSException extends SRSSException
+{
+    public function __construct($file)
+    {
+        parent::__construct(sprintf('File `%s` is unreadable.', $file));
+    }
+
+}
\ No newline at end of file
diff --git a/src/Parser/SRSSParser.php b/src/Parser/SRSSParser.php
index 2936ad8..10571c3 100644
--- a/src/Parser/SRSSParser.php
+++ b/src/Parser/SRSSParser.php
@@ -9,7 +9,9 @@ use DOMXPath;
 use Shikiryu\SRSS\Entity\Channel;
 use Shikiryu\SRSS\Entity\Channel\Image;
 use Shikiryu\SRSS\Entity\Item;
+use Shikiryu\SRSS\Exception\ChannelNotFoundInRSSException;
 use Shikiryu\SRSS\Exception\SRSSException;
+use Shikiryu\SRSS\Exception\UnreadableRSSException;
 use Shikiryu\SRSS\SRSS;
 
 class SRSSParser extends DomDocument
@@ -41,9 +43,11 @@ class SRSSParser extends DomDocument
      * @param string $link
      *
      * @return SRSS
+     * @throws ChannelNotFoundInRSSException
      * @throws SRSSException
+     * @throws UnreadableRSSException
      */
-    public function parse(string $link)
+    public function parse(string $link): SRSS
     {
         if(@$this->load($link)) { // We don't want the warning in case of bad XML. Let's manage it with an exception.
             $channel = $this->getElementsByTagName('channel');
@@ -54,10 +58,10 @@ class SRSSParser extends DomDocument
                 return $this->doc;
             }
 
-            throw new SRSSException('invalid file '.$link);
+            throw new ChannelNotFoundInRSSException($link);
         }
 
-        throw new SRSSException('Can not open file '.$link);
+        throw new UnreadableRSSException($link);
     }
 
     /**
@@ -116,7 +120,7 @@ class SRSSParser extends DomDocument
     {
         $channel = $this->getElementsByTagName('channel');
         if($channel->length != 1) {
-            throw new SRSSException('channel node not created, or too many channel nodes');
+            throw new ChannelNotFoundInRSSException('channel node not created, or too many channel nodes');
         }
 
         return $channel->item(0);
diff --git a/src/SRSS.php b/src/SRSS.php
index 18da1d8..fad830a 100644
--- a/src/SRSS.php
+++ b/src/SRSS.php
@@ -3,15 +3,20 @@
 namespace Shikiryu\SRSS;
 
 use Iterator;
+use ReflectionException;
 use Shikiryu\SRSS\Builder\SRSSBuilder;
 use Shikiryu\SRSS\Entity\Channel;
 use Shikiryu\SRSS\Entity\Item;
+use Shikiryu\SRSS\Exception\ChannelNotFoundInRSSException;
+use Shikiryu\SRSS\Exception\PropertyNotFoundException;
 use Shikiryu\SRSS\Exception\SRSSException;
+use Shikiryu\SRSS\Exception\UnreadableRSSException;
 use Shikiryu\SRSS\Parser\SRSSParser;
 
 class SRSS implements Iterator
 {
     public Channel $channel;
+
     /** @var Item[] */
     public array $items; // array of SRSSItems
 
@@ -30,6 +35,8 @@ class SRSS implements Iterator
      * @param string $link url of the rss
      *
      * @return SRSS
+     * @throws ChannelNotFoundInRSSException
+     * @throws UnreadableRSSException
      * @throws SRSSException
      */
     public static function read(string $link): SRSS
@@ -40,7 +47,7 @@ class SRSS implements Iterator
     /**
      * @return SRSS
      */
-    public static function create()
+    public static function create(): SRSS
     {
         $doc = new SRSS;
 
@@ -65,7 +72,7 @@ class SRSS implements Iterator
             }
 
             return ($valid && $this->channel->isValid());
-        } catch (\ReflectionException $e) {
+        } catch (ReflectionException $e) {
             return false;
         }
     }
@@ -91,7 +98,7 @@ class SRSS implements Iterator
     public function __set($name, $val)
     {
         if (!property_exists(Channel::class, $name)) {
-            throw new SRSSException($name . ' is not a possible item');
+            throw new PropertyNotFoundException(Channel::class, $name);
         }
         // TODO add validator ?
 //        if ((new Validator())->isPropertyValid($this->channel, $name)) {
@@ -210,9 +217,9 @@ class SRSS implements Iterator
     }
 
     /**
-     * @param \Shikiryu\SRSS\Entity\Item $rssItem
+     * @param Item $rssItem
      *
-     * @return array|\Shikiryu\SRSS\Entity\Item[]
+     * @return array|Item[]
      */
     public function addItem(Item $rssItem): array
     {
@@ -222,9 +229,9 @@ class SRSS implements Iterator
     }
 
     /**
-     * @param \Shikiryu\SRSS\Entity\Item $firstItem
+     * @param Item $firstItem
      *
-     * @return array|\Shikiryu\SRSS\Entity\Item[]
+     * @return array|Item[]
      */
     public function addItemBefore(Item $firstItem): array
     {
diff --git a/tests/BasicReaderTest.php b/tests/BasicReaderTest.php
index 331ecde..e6444f7 100644
--- a/tests/BasicReaderTest.php
+++ b/tests/BasicReaderTest.php
@@ -2,6 +2,7 @@
 
 use PHPUnit\Framework\TestCase;
 use Shikiryu\SRSS\Exception\SRSSException;
+use Shikiryu\SRSS\Exception\UnreadableRSSException;
 use Shikiryu\SRSS\SRSS;
 
 class BasicReaderTest extends TestCase
@@ -17,12 +18,6 @@ class BasicReaderTest extends TestCase
         self::assertTrue($rss->isValid());
     }
 
-    public function testRssNotFound()
-    {
-        $this->expectException(SRSSException::class);
-        $rss = SRSS::read('not_found.xml');
-    }
-
     public function testSpecificationExampleRSS()
     {
         $rss = SRSS::read(__DIR__.'/resources/harvard.xml');
diff --git a/tests/ExceptionTest.php b/tests/ExceptionTest.php
new file mode 100644
index 0000000..004f4dc
--- /dev/null
+++ b/tests/ExceptionTest.php
@@ -0,0 +1,29 @@
+<?php
+
+use PHPUnit\Framework\TestCase;
+use Shikiryu\SRSS\Exception\ChannelNotFoundInRSSException;
+use Shikiryu\SRSS\Exception\PropertyNotFoundException;
+use Shikiryu\SRSS\Exception\UnreadableRSSException;
+use Shikiryu\SRSS\SRSS;
+
+class ExceptionTest extends TestCase
+{
+    public function testPropertyNotFound()
+    {
+        $srss = new SRSS();
+        $this->expectException(PropertyNotFoundException::class);
+        $srss->notfound = 'true';
+    }
+
+    public function testRssNotFound()
+    {
+        $this->expectException(UnreadableRSSException::class);
+        $rss = SRSS::read('not_found.xml');
+    }
+
+    public function testMissingChannel()
+    {
+        $this->expectException(ChannelNotFoundInRSSException::class);
+        $rss = SRSS::read(__DIR__ . '/resources/invalid-no-channel.xml');
+    }
+}
\ No newline at end of file
diff --git a/tests/resources/invalid-no-channel.xml b/tests/resources/invalid-no-channel.xml
new file mode 100644
index 0000000..e7cf96f
--- /dev/null
+++ b/tests/resources/invalid-no-channel.xml
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<rss version="2.0">
+
+    <title>test Home Page</title>
+    <link>https://www.test.com</link>
+    <description>Free web building tutorials</description>
+    <item>
+        <title>RSS Tutorial</title>
+        <link>https://www.test.com/xml/xml_rss.asp</link>
+        <description>New RSS tutorial on test</description>
+    </item>
+    <item>
+        <title>XML Tutorial</title>
+        <link>https://www.test.com/xml</link>
+        <description>New XML tutorial on test</description>
+    </item>
+
+</rss>
\ No newline at end of file