diff --git a/ChangeLog b/ChangeLog
index c22c43a7..2c202c07 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -181,6 +181,10 @@ releases.
 
 ### Fixes
 * Fixed a systemd-journal handling in fail2ban-regex (gh-1657)
+* filter.d/sshd.conf
+    - Fixed non-anchored part of failregex (misleading match of colon inside
+      IPv6 address instead of `: ` in the reason-part by missing space, gh-1658)
+      (0.10th resp. IPv6 relevant only, amend for gh-1479)
 
 ### New Features
 * New Actions:
diff --git a/config/filter.d/sshd.conf b/config/filter.d/sshd.conf
index 4cff2af7..7ebb6b9c 100644
--- a/config/filter.d/sshd.conf
+++ b/config/filter.d/sshd.conf
@@ -20,7 +20,7 @@ _daemon = sshd
 
 failregex = ^%(__prefix_line)s(?:error: PAM: )?[aA]uthentication (?:failure|error|failed) for .* from <HOST>( via \S+)?\s*$
             ^%(__prefix_line)s(?:error: PAM: )?User not known to the underlying authentication module for .* from <HOST>\s*$
-            ^%(__prefix_line)sFailed \S+ for (?P<cond_inv>invalid user )?(?P<user>(?P<cond_user>\S+)|(?(cond_inv)(?:(?! from ).)*?|[^:]+)) from <HOST>(?: port \d+)?(?: ssh\d*)?(?(cond_user):|(?:(?:(?! from ).)*)$)
+            ^%(__prefix_line)sFailed \S+ for (?P<cond_inv>invalid user )?(?P<user>(?P<cond_user>\S+)|(?(cond_inv)(?:(?! from ).)*?|[^:]+)) from <HOST>(?: port \d+)?(?: ssh\d*)?(?(cond_user): |(?:(?:(?! from ).)*)$)
             ^%(__prefix_line)sROOT LOGIN REFUSED.* FROM <HOST>\s*$
             ^%(__prefix_line)s[iI](?:llegal|nvalid) user .*? from <HOST>(?: port \d+)?\s*$
             ^%(__prefix_line)sUser .+ from <HOST> not allowed because not listed in AllowUsers\s*$