diff --git a/library/src/main/java/org/mustangproject/ZUGFeRD/Version.java b/library/src/main/java/org/mustangproject/ZUGFeRD/Version.java
deleted file mode 100644
index 07d370e9..00000000
--- a/library/src/main/java/org/mustangproject/ZUGFeRD/Version.java
+++ /dev/null
@@ -1,5 +0,0 @@
-package org.mustangproject.ZUGFeRD;
-
-public class Version {
-	public static final String VERSION = "2.9.0";
-}
diff --git a/validator/pom.xml b/validator/pom.xml
index d8e80ee6..1ff7e227 100644
--- a/validator/pom.xml
+++ b/validator/pom.xml
@@ -29,9 +29,9 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <maven.deploy.skip>false
         </maven.deploy.skip><!-- do deploy to maven central, parent project does not and inherits -->
-        <maven.compiler.compilerVersion>21</maven.compiler.compilerVersion>
-        <maven.compiler.source>21</maven.compiler.source>
-        <maven.compiler.target>21</maven.compiler.target>
+        <maven.compiler.compilerVersion>8</maven.compiler.compilerVersion>
+        <maven.compiler.source>8</maven.compiler.source>
+        <maven.compiler.target>8</maven.compiler.target>
 
     </properties>
     <dependencies>
@@ -190,8 +190,8 @@
                     <!-- http://stackoverflow.com/questions/574594/how-can-i-create-an-executable-jar-with-dependencies-using-maven
                              mvn clean compile assembly:single -->
                     <!-- or whatever version you use -->
-                    <source>9</source>
-                    <target>9</target>
+                    <source>8</source>
+                    <target>8</target>
                 </configuration>
             </plugin>
             <!-- /ZUV -->
diff --git a/validator/src/main/java/org/mustangproject/validator/PDFValidator.java b/validator/src/main/java/org/mustangproject/validator/PDFValidator.java
index cbdd803b..a2c18b16 100644
--- a/validator/src/main/java/org/mustangproject/validator/PDFValidator.java
+++ b/validator/src/main/java/org/mustangproject/validator/PDFValidator.java
@@ -327,9 +327,8 @@ public class PDFValidator extends Validator {
 
 	}
 
-	public void setFileContents(byte[] filecontents) throws IrrecoverableValidationError {
-		this.fileContents = filecontents;
-
+	public void setFileContents(byte[] fileContents) {
+		this.fileContents = fileContents;
 	}
 
 	public String getRawXML() {