diff --git a/README.rst b/README.rst
index cf9e4f0..39d485b 100644
--- a/README.rst
+++ b/README.rst
@@ -65,6 +65,10 @@ Contributors
 Changelog
 =========
 
+* Version 1.7 dated 2020-01-13
+
+  * Fix bug in release 1.6 in XMP: variables were not replaced by their real value
+
 * Version 1.6 dated 2020-01-09
 
   * Generate XMP (XML-based PDF metadata) via string replacement instead of using XML lib
diff --git a/facturx/_version.py b/facturx/_version.py
index 6d5e09d..218f431 100644
--- a/facturx/_version.py
+++ b/facturx/_version.py
@@ -1 +1 @@
-__version__ = '1.6'
+__version__ = '1.7'
diff --git a/facturx/facturx.py b/facturx/facturx.py
index 13ef6db..fb037cd 100644
--- a/facturx/facturx.py
+++ b/facturx/facturx.py
@@ -412,7 +412,7 @@ def _prepare_pdf_metadata_xml(facturx_level, pdf_metadata):
 </x:xmpmeta>
 <?xpacket end="w"?>
 """
-    xml_str.format(
+    xml_str = xml_str.format(
         title=pdf_metadata.get('title', ''),
         author=pdf_metadata.get('author', ''),
         subject=pdf_metadata.get('subject', ''),