diff --git a/src/main/java/de/kosit/validationtool/impl/ContentRepository.java b/src/main/java/de/kosit/validationtool/impl/ContentRepository.java
index 84cd418..b178892 100644
--- a/src/main/java/de/kosit/validationtool/impl/ContentRepository.java
+++ b/src/main/java/de/kosit/validationtool/impl/ContentRepository.java
@@ -47,6 +47,7 @@ import lombok.extern.slf4j.Slf4j;
 import de.kosit.validationtool.api.ResolvingConfigurationStrategy;
 import de.kosit.validationtool.impl.Scenario.Transformation;
 import de.kosit.validationtool.impl.xml.RelativeUriResolver;
+import de.kosit.validationtool.impl.xml.StringTrimAdapter;
 import de.kosit.validationtool.model.scenarios.NamespaceType;
 import de.kosit.validationtool.model.scenarios.ResourceType;
 import de.kosit.validationtool.model.scenarios.ScenarioType;
@@ -284,13 +285,13 @@ public class ContentRepository {
 
     public XPathExecutable createMatchExecutable(final ScenarioType s) {
         final Map<String, String> namespaces = s.getNamespace().stream()
-                .collect(Collectors.toMap(NamespaceType::getPrefix, NamespaceType::getValue));
+                .collect(Collectors.toMap(NamespaceType::getPrefix, ns -> StringTrimAdapter.trim(ns.getValue())));
         return createXPath(s.getMatch(), namespaces);
     }
 
     public XPathExecutable createAccepptExecutable(final ScenarioType s) {
         final Map<String, String> namespaces = s.getNamespace().stream()
-                .collect(Collectors.toMap(NamespaceType::getPrefix, NamespaceType::getValue));
+                .collect(Collectors.toMap(NamespaceType::getPrefix, ns -> StringTrimAdapter.trim(ns.getValue())));
         return createXPath(s.getAcceptMatch(), namespaces);
     }
 
diff --git a/src/main/java/de/kosit/validationtool/impl/xml/StringTrimAdapter.java b/src/main/java/de/kosit/validationtool/impl/xml/StringTrimAdapter.java
new file mode 100644
index 0000000..c6c59b3
--- /dev/null
+++ b/src/main/java/de/kosit/validationtool/impl/xml/StringTrimAdapter.java
@@ -0,0 +1,29 @@
+package de.kosit.validationtool.impl.xml;
+
+import javax.xml.bind.annotation.adapters.XmlAdapter;
+
+public class StringTrimAdapter extends XmlAdapter<String, String> {
+
+    @Override
+    public String unmarshal(final String v) {
+        if (v == null) {
+            return null;
+        }
+        return v.trim();
+    }
+
+    @Override
+    public String marshal(final String v) {
+        if (v == null) {
+            return null;
+        }
+        return v.trim();
+    }
+
+    public static String trim(final String v) {
+        if (v == null) {
+            return null;
+        }
+        return v.trim();
+    }
+}
\ No newline at end of file
diff --git a/src/main/model/binding/global.xjb b/src/main/model/binding/global.xjb
index be1e39c..a101944 100644
--- a/src/main/model/binding/global.xjb
+++ b/src/main/model/binding/global.xjb
@@ -26,7 +26,12 @@
         jaxb:extensionBindingPrefixes="inheritance"
         version="2.1">
     <jaxb:globalBindings>
-        <xjc:serializable uid="-1"/>
+        <xjc:serializable uid="-1" />
+        <xjc:javaType
+                name="java.lang.String"
+                xmlType="xs:string"
+                adapter="de.kosit.validationtool.impl.xml.StringTrimAdapter" />
+
     </jaxb:globalBindings>
 
 
diff --git a/src/test/resources/examples/simple/scenarios.xml b/src/test/resources/examples/simple/scenarios.xml
index 1513b5d..1e56b26 100644
--- a/src/test/resources/examples/simple/scenarios.xml
+++ b/src/test/resources/examples/simple/scenarios.xml
@@ -31,8 +31,10 @@
         <description>
             <p>Nur Schemaprüfung.</p>
         </description>
-        <namespace prefix="cri">http://www.xoev.de/de/validator/framework/1/createreportinput</namespace>
-        <namespace prefix="test">http://validator.kosit.de/test-sample</namespace>
+        <namespace prefix="cri">http://www.xoev.de/de/validator/framework/1/createreportinput
+        </namespace>
+        <namespace prefix="test">
+            http://validator.kosit.de/test-sample</namespace>
         <namespace prefix="rpt">http://validator.kosit.de/test-report</namespace>
         <match>/test:simple</match>