diff --git a/src/main/java/org/mustangproject/ZUGFeRD/XMPSchemaPDFAExtensions.java b/src/main/java/org/mustangproject/ZUGFeRD/XMPSchemaPDFAExtensions.java
index 8dbaccf6..44234258 100644
--- a/src/main/java/org/mustangproject/ZUGFeRD/XMPSchemaPDFAExtensions.java
+++ b/src/main/java/org/mustangproject/ZUGFeRD/XMPSchemaPDFAExtensions.java
@@ -43,7 +43,7 @@ public class XMPSchemaPDFAExtensions extends PDFAExtensionSchema {
 	public String prefix = null;
 	
 	
-	public void setZUGFeRDVersion(int ver) {
+	protected void setZUGFeRDVersion(int ver) {
 		namespace=ZUGFeRDExporter.getNamespaceForVersion(ver);
 		prefix=ZUGFeRDExporter.getPrefixForVersion(ver);
 	}
@@ -76,15 +76,15 @@ public class XMPSchemaPDFAExtensions extends PDFAExtensionSchema {
 		return li;
 	}
 
-	public XMPSchemaPDFAExtensions(XMPMetadata metadata) {
+	public XMPSchemaPDFAExtensions(XMPMetadata metadata, int ZFVersion) {
 		super(metadata);
-		setZUGFeRDVersion(ZUGFeRDExporter.DefaultZUGFeRDVersion);
+		setZUGFeRDVersion(ZFVersion);
 		attachExtensions(metadata, true);
 	}
 	
-	public XMPSchemaPDFAExtensions(XMPMetadata metadata, boolean withZF) {
+	public XMPSchemaPDFAExtensions(XMPMetadata metadata, int ZFVersion, boolean withZF) {
 		super(metadata);
-		setZUGFeRDVersion(ZUGFeRDExporter.DefaultZUGFeRDVersion);
+		setZUGFeRDVersion(ZFVersion);
 		attachExtensions(metadata, withZF);
 	}
 
diff --git a/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDExporter.java b/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDExporter.java
index 86667e1f..95dada29 100644
--- a/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDExporter.java
+++ b/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDExporter.java
@@ -116,6 +116,7 @@ public class ZUGFeRDExporter implements Closeable {
 		}
 	}
 
+@Deprecated	
 	public void setZUGFeRDVersion(int ver) {
 		if (ver == 1) {
 			ZUGFeRD1PullProvider z1p = new ZUGFeRD1PullProvider();
diff --git a/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDExporterFromA3Factory.java b/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDExporterFromA3Factory.java
index b69e1ca1..30d71255 100644
--- a/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDExporterFromA3Factory.java
+++ b/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDExporterFromA3Factory.java
@@ -176,8 +176,8 @@ public class ZUGFeRDExporterFromA3Factory implements IExporterFactory {
 			metadata.addSchema(zf);
 		}
 
-		XMPSchemaPDFAExtensions pdfaex = new XMPSchemaPDFAExtensions(metadata, attachZugferdHeaders);
-
+		XMPSchemaPDFAExtensions pdfaex = new XMPSchemaPDFAExtensions(metadata, ZFVersion, attachZugferdHeaders);
+		pdfaex.setZUGFeRDVersion(ZFVersion);
 		metadata.addSchema(pdfaex);
 
 	}
diff --git a/src/test/java/org/mustangproject/ZUGFeRD/MustangReaderWriterTest.java b/src/test/java/org/mustangproject/ZUGFeRD/MustangReaderWriterTest.java
index 5a6c8cd7..bf07283d 100644
--- a/src/test/java/org/mustangproject/ZUGFeRD/MustangReaderWriterTest.java
+++ b/src/test/java/org/mustangproject/ZUGFeRD/MustangReaderWriterTest.java
@@ -379,6 +379,7 @@ public class MustangReaderWriterTest extends TestCase implements IZUGFeRDExporta
 			assertFalse(pdfContent.indexOf("(via mustangproject.org") == -1);
 			// check for pdf-a schema extension
 			assertFalse(pdfContent.indexOf("<fx:ConformanceLevel>EXTENDED</fx:ConformanceLevel>") == -1);
+			assertFalse(pdfContent.indexOf("<pdfaSchema:prefix>fx</pdfaSchema:prefix>") == -1);
 			assertFalse(pdfContent.indexOf("urn:cen.eu:en16931:2017:compliant:factur-x.eu:1p0:extended") == -1);
 		}