diff --git a/library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDImporter.java b/library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDImporter.java
index 184aefce..739b313e 100644
--- a/library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDImporter.java
+++ b/library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDImporter.java
@@ -78,13 +78,6 @@ public class ZUGFeRDImporter extends ZUGFeRDInvoiceImporter {
 
 
 
-	/***
-	 * do not raise ParseExceptions even if the reproduced invoice total does not match the given value
-	 */
-	public void doIgnoreCalculationErrors() {
-		ignoreCalculationErrors = true;
-	}
-
 	////////////////////////////////////
 
 	/**
@@ -435,7 +428,7 @@ public class ZUGFeRDImporter extends ZUGFeRDInvoiceImporter {
 	 * @return the Issue Date()
 	 */
 	public String getIssueDate() {
-		SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd");
+		SimpleDateFormat sdf=new SimpleDateFormat("yyyyMMdd");
 		return sdf.format(importedInvoice.getIssueDate());
 	}
 
diff --git a/library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDInvoiceImporter.java b/library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDInvoiceImporter.java
index 344184c4..c86741b6 100644
--- a/library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDInvoiceImporter.java
+++ b/library/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDInvoiceImporter.java
@@ -183,6 +183,14 @@ public class ZUGFeRDInvoiceImporter {
 	}
 
 
+	/***
+	 * do not raise ParseExceptions even if the reproduced invoice total does not match the given value
+	 */
+	public void doIgnoreCalculationErrors() {
+		ignoreCalculationErrors = true;
+	}
+
+
 	/***
 	 * sets th pdf attachments, and if a file is recognized (e.g. a factur-x.xml) triggers processing
 	 * @param names the Hashmap of String, PDComplexFileSpecification
diff --git a/library/src/test/java/org/mustangproject/ZUGFeRD/MustangReaderWriterTest.java b/library/src/test/java/org/mustangproject/ZUGFeRD/MustangReaderWriterTest.java
index 5cec1518..b7fbede6 100644
--- a/library/src/test/java/org/mustangproject/ZUGFeRD/MustangReaderWriterTest.java
+++ b/library/src/test/java/org/mustangproject/ZUGFeRD/MustangReaderWriterTest.java
@@ -216,6 +216,7 @@ public class MustangReaderWriterTest extends MustangReaderTestCase {
 		InputStream inputStream = this.getClass().getResourceAsStream("/zugferd_invoice.pdf");
 		ZUGFeRDImporter zi = new ZUGFeRDImporter();
 		zi.doRecalculateItemPricesFromLineTotals();
+		zi.doIgnoreCalculationErrors();
 		zi.setInputStream(inputStream);
 		// Reading ZUGFeRD
 		String amount = zi.getAmount();