diff --git a/PVEDiscordDark.py b/PVEDiscordDark.py
index fa90996..f45134f 100644
--- a/PVEDiscordDark.py
+++ b/PVEDiscordDark.py
@@ -59,7 +59,7 @@ def checkPVE():
         cprint(colors.NORMAL, 'A Proxmox installation could not be detected.')
         exit(1)
     else:
-        cprint(colors.OKGREEN, f'\nPVE {ver} detected.')
+        cprint(colors.OKGREEN, '\nPVE ' + ver + ' detected.')
 
 def checkConn():
     try:
@@ -84,20 +84,21 @@ def themeIsInstalled():
 def installTheme():
     clear()
     doHeader()
-    baseURL = os.getenv('BASEURL', f'https://github.com/Weilbyte/PVEDiscordDark/raw/{os.getenv("BRANCH", "master")}')
+    baseURL = os.getenv('BASEURL', 'https://github.com/Weilbyte/PVEDiscordDark/raw/' + os.getenv("BRANCH", "master"))
     cprint(colors.NORMAL, '\nBacking up index template file..')
     shutil.copyfile('/usr/share/pve-manager/index.html.tpl', '/usr/share/pve-manager/index.html.tpl.bak')
     cprint(colors.NORMAL, 'Downloading stylesheet..')
-    urllib.request.urlretrieve(f'{baseURL}/PVEDiscordDark/sass/PVEDiscordDark.css', '/usr/share/pve-manager/css/dd_style.css')
+    urllib.request.urlretrieve(baseURL + '/PVEDiscordDark/sass/PVEDiscordDark.css', '/usr/share/pve-manager/css/dd_style.css')
     cprint(colors.NORMAL, 'Downloading patcher..')
-    urllib.request.urlretrieve(f'{baseURL}/PVEDiscordDark/js/PVEDiscordDark.js', '/usr/share/pve-manager/js/dd_patcher.js')
+    urllib.request.urlretrieve(baseURL + '/PVEDiscordDark/js/PVEDiscordDark.js', '/usr/share/pve-manager/js/dd_patcher.js')
     cprint(colors.NORMAL, 'Applying stylesheet and patcher..')
     with open('/usr/share/pve-manager/index.html.tpl', 'a') as tplFile:
         tplFile.write("<link rel='stylesheet' type='text/css' href='/pve2/css/dd_style.css'>")
         tplFile.write("<script type='text/javascript' src='/pve2/js/dd_patcher.js'></script>")
     for index, image in enumerate(images):
-        cprint(colors.NORMAL, f'Downloading images [{index + 1}/{len(images)}]..\r', False, True)
-        urllib.request.urlretrieve(f'{baseURL}/PVEDiscordDark/images/{image}', f'/usr/share/pve-manager/images/{image}')
+        imageCurrent = index + 1
+        cprint(colors.NORMAL, 'Downloading images [' + imageCurrent + '/' + len(images) + ']..\r', False, True)
+        urllib.request.urlretrieve(baseURL + '/PVEDiscordDark/images/' + image, '/usr/share/pve-manager/images/' + image)
     cprint(colors.OKGREEN, '\nTheme installed successfully!', True)
     if ACTION == None:
         cprint(colors.NORMAL, 'Press [ENTER] to go back.')
@@ -129,7 +130,7 @@ def uninstallTheme():
     cprint(colors.NORMAL, 'Removing images..')
     for asset in os.listdir('/usr/share/pve-manager/images/'):
         if asset.startswith('dd_'):
-            os.remove(f'/usr/share/pve-manager/images/{asset}')
+            os.remove('/usr/share/pve-manager/images/' + asset)
     cprint(colors.OKGREEN, '\n\nTheme uninstalled successfully!', True)
     if ACTION == None:
         cprint(colors.NORMAL, 'Press [ENTER] to go back.')
@@ -186,4 +187,4 @@ def main():
                 uninstallTheme()
 
 if __name__ == "__main__":
-    main()
\ No newline at end of file
+    main()