diff --git a/backup.py b/backup.py
index d2f6938..266dc56 100644
--- a/backup.py
+++ b/backup.py
@@ -1,7 +1,7 @@
 #!/usr/bin/env python3
 """
 project: Backuppy
-version: 1.01.000
+version: 1.01.001
 file: backup.py
 summary: main entry python file
 """
@@ -19,7 +19,7 @@ from languages import english
 from languages import german
 
 # local globals
-VERSION: str = "1.01.000"
+VERSION: str = "1.01.001"
 EMAIL: str = "fotocoder@joschu.ch"
 LANG_EN: str = "English"
 LANG_DE: str = "German"
@@ -254,7 +254,7 @@ class Page10(QtWidgets.QWizardPage):
     def initializePage(self):
         self.label1.setText(get_lang_text("outro1"))
         self.label2.setText(get_lang_text("outro2"))
-        urlLink = "<a href='mailto: " + EMAIL + "'>fotocoder@joschu.ch</a>" 
+        urlLink = f"<a href='mailto: {EMAIL}'>{EMAIL}</a>" 
         self.label3.setText(urlLink)
         self.label3.setOpenExternalLinks(True)
 
diff --git a/changelog.MD b/changelog.MD
index 61fc7fc..51721aa 100644
--- a/changelog.MD
+++ b/changelog.MD
@@ -1,13 +1,17 @@
 # Changelog Backuppy
 
+## [1.01.001] - 2021-05-04
+### Changed
+- Use E-MAIL constant
+
 ## [1.01.000] - 2021-05-04
 ### Added
- - Graphical installer based on Python3 with PySide2 GUI framework (Qt-bindings for Python)
- - Changelog.MD
+- Graphical installer based on Python3 with PySide2 GUI framework (Qt-bindings for Python)
+- Changelog.MD
 
- ### Changed 
- - Directory ".languages" renamed to "languages" due to python module import syntax constraints
- - Files "english.txt" and "german.txt" renamed to .-py due to follow the python filename schema
+### Changed
+- Directory ".languages" renamed to "languages" due to python module import syntax constraints
+- Files "english.txt" and "german.txt" renamed to .-py due to follow the python filename schema
 
 # Changelog Backuppy