diff --git a/update-firewall-source.py b/update-firewall-source.py
index 36c4bfd..07627e9 100644
--- a/update-firewall-source.py
+++ b/update-firewall-source.py
@@ -32,13 +32,12 @@ import difflib
 # 3 : No physical network device found at "/sys/class/net"
 # 4 : Linux find command exited non-zero trying to find a physical network device at "/sys/class/net"
 # 5 : Unable to open firewalld direct rules file for reading
-# 6 : Source and destination are identical when attempting to back up firewalld direct rules file
+# 6 : Kernel sysfs export for network devices at "/sys/class/net" doesn't exist
 # 7 : An option that must have a non-null value is either unset or null
 # 8 : Exception while adding a chain XML element to firewalld direct rules
 # 9 : Unable to open firewalld direct rules file for updating
 # 10: Unable to restart systemd firewalld.service unit
 # 11: Unable to add a <rule/> tag to firewalld
-# 12: Kernel sysfs export for network devices at "/sys/class/net" doesn't exist
 
 
 class CONST(object):
@@ -356,8 +355,8 @@ def get_phy_nics() -> list:
     else:
         log.error(f"Path {linux_sysfs_nics_abs!r} does not exist. This might not be a Linux-y operating system. "
                   f"Without that location we'll not be able to separate physical network interfaces from virtual ones. "
-                  f"Exiting 12 ...")
-        sys.exit(12)
+                  f"Exiting 6 ...")
+        sys.exit(6)
 
     log.debug(f"List of identified physical network interfaces: {phy_nics}")
     return phy_nics