diff --git a/ChangeLog b/ChangeLog
index a48b16a4..3e6c3b0f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,8 +1,13 @@
+Tue May 10 11:11:26 CEST 2005 Kasimier Buchcik <libxml2-cvs@cazic.net>
+
+	* test/schemas/bug303566_1* result/schemas/bug303566_1_1*:
+	  Added regression a test provided by Heiko Oberdiek (bug #303566).
+
 Mon May  9 17:56:58 CEST 2005 Kasimier Buchcik <libxml2-cvs@cazic.net>
 
 	* pattern.c: Changed the XPath "." to resolve only on the first
-	  level for XML Schema IDCs. This should not affect pattern-like
-	  resolution on every level.
+	  level for XML Schema IDCs (bug #303566 reported by Heiko Oberdiek).
+	  This should not affect pattern-like resolution on every level.
 
 Sun May  8 13:35:39 CEST 2005 Daniel Veillard <daniel@veillard.com>
 
diff --git a/result/schemas/bug303566_1_1 b/result/schemas/bug303566_1_1
new file mode 100644
index 00000000..8092bf0c
--- /dev/null
+++ b/result/schemas/bug303566_1_1
@@ -0,0 +1 @@
+./test/schemas/bug303566_1.xml fails to validate
diff --git a/result/schemas/bug303566_1_1.err b/result/schemas/bug303566_1_1.err
new file mode 100644
index 00000000..235fc691
--- /dev/null
+++ b/result/schemas/bug303566_1_1.err
@@ -0,0 +1 @@
+./test/schemas/bug303566_1.xml:9: element Part: Schemas validity error : Element 'Part' [keyRef 'PartRefCountryDummy']: No match found for key reference ['B'].
diff --git a/test/schemas/bug303566_1.xml b/test/schemas/bug303566_1.xml
new file mode 100644
index 00000000..1bf56dc5
--- /dev/null
+++ b/test/schemas/bug303566_1.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0"?>
+<Test
+  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:noNamespaceSchemaLocation="bug303566_1.xsd">
+  <Country code="D">
+    <City name="Berlin"
+          code="B">
+      <Part country="D"/>
+      <Part country="B"/>
+    </City>
+  </Country>
+  <Country code="F">
+    <City name="Paris" code="P">
+      <Part country="F"/>
+      <Part country="F"/>
+    </City>
+  </Country>
+</Test>
+
diff --git a/test/schemas/bug303566_1.xsd b/test/schemas/bug303566_1.xsd
new file mode 100644
index 00000000..fee99f7b
--- /dev/null
+++ b/test/schemas/bug303566_1.xsd
@@ -0,0 +1,63 @@
+<?xml version="1.0"?>
+<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema">
+
+  <xsd:simpleType name="codeType">
+    <xsd:restriction base="xsd:string">
+      <xsd:pattern value="[A-Z]+"/>
+    </xsd:restriction>
+  </xsd:simpleType>
+
+  <xsd:element name="Test">
+    <xsd:complexType>
+      <xsd:sequence>
+        <xsd:element ref="Country"
+                     maxOccurs="unbounded"/>
+      </xsd:sequence>
+    </xsd:complexType>
+  </xsd:element>
+
+  <xsd:element name="Country">
+    <xsd:complexType>
+      <xsd:sequence>
+        <xsd:element ref="City"
+                     maxOccurs="unbounded"/>
+      </xsd:sequence>
+      <xsd:attribute name="code"
+                     type="codeType"
+                     use="required"/>
+    </xsd:complexType>
+    <xsd:key name="CountryDummyKey">
+      <xsd:selector xpath="."/>
+      <xsd:field xpath="@code"/>
+    </xsd:key>
+    <xsd:keyref name="PartRefCountryDummy"
+      refer="CountryDummyKey">
+      <xsd:selector xpath=".//Part"/>
+      <xsd:field xpath="@country"/>
+    </xsd:keyref>
+  </xsd:element>
+
+  <xsd:element name="City">
+    <xsd:complexType>
+      <xsd:sequence>
+        <xsd:element ref="Part"
+                     minOccurs="2"
+                     maxOccurs="2"/>
+      </xsd:sequence>
+      <xsd:attribute name="name"
+                     type="xsd:string"
+                     use="required"/>
+      <xsd:attribute name="code"
+                     type="xsd:string"
+                     use="required"/>
+    </xsd:complexType>
+  </xsd:element>
+
+  <xsd:element name="Part">
+    <xsd:complexType>
+      <xsd:attribute name="country"
+                    type="codeType"
+                    use="required"/>
+    </xsd:complexType>
+  </xsd:element>
+</xsd:schema>
\ No newline at end of file