diff --git a/pom.xml b/pom.xml
index ad1bfc0b..ed9d55d5 100644
--- a/pom.xml
+++ b/pom.xml
@@ -3,7 +3,7 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>org.mustangproject.ZUGFeRD</groupId>
 	<artifactId>mustang</artifactId>
-	<version>1.7.3-SNAPSHOT</version>
+	<version>1.7.2-SNAPSHOT</version>
 	<packaging>jar</packaging>
 	<name>Mustang</name>
 	<description>The Mustang project is a java library to read and write ZUGFeRD meta data inside your invoice PDFs
diff --git a/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDImporter.java b/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDImporter.java
index c9004873..a33ea2e3 100644
--- a/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDImporter.java
+++ b/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDImporter.java
@@ -128,8 +128,9 @@ public class ZUGFeRDImporter {
 
 	private void extractFiles(Map<String, PDComplexFileSpecification> names) throws IOException {
 		for (String alias : names.keySet()) {
-			String filename=names.get(alias).getFilename();
-			
+
+			PDComplexFileSpecification fileSpec = names.get(alias);
+			String filename=fileSpec.getFilename();
 			/**
 			 * currently (in the release candidate of version 1) only one attached file with
 			 * the name ZUGFeRD-invoice.xml is allowed
@@ -137,7 +138,6 @@ public class ZUGFeRDImporter {
 			if ((filename.equals("ZUGFeRD-invoice.xml") || (filename.equals("zugferd-invoice.xml")) || filename.equals("factur-x.xml"))) { //$NON-NLS-1$
 				containsMeta = true;
 
-				PDComplexFileSpecification fileSpec = names.get(filename);
 				PDEmbeddedFile embeddedFile = fileSpec.getEmbeddedFile();
 				// String embeddedFilename = filePath + filename;
 				// File file = new File(filePath + filename);
@@ -154,7 +154,6 @@ public class ZUGFeRDImporter {
 			}
 			if (filename.startsWith("additional_data")) {
 
-				PDComplexFileSpecification fileSpec = names.get(filename);
 				PDEmbeddedFile embeddedFile = fileSpec.getEmbeddedFile();
 				additionalXMLs.put(filename, embeddedFile.toByteArray());