diff --git a/config/action.d/iptables-allports.conf b/config/action.d/iptables-allports.conf
index 1cc2daba..f534fee9 100644
--- a/config/action.d/iptables-allports.conf
+++ b/config/action.d/iptables-allports.conf
@@ -29,7 +29,7 @@ actionstop = iptables -D <chain> -p <protocol> -j fail2ban-<name>
 # Notes.:  command executed once before each actionban command
 # Values:  CMD
 #
-actioncheck = iptables -n -L <chain> | grep -q fail2ban-<name>
+actioncheck = iptables -n -L <chain> | grep -q 'fail2ban-<name>[ \t]'
 
 # Option:  actionban
 # Notes.:  command executed when banning an IP. Take care that the
diff --git a/config/action.d/iptables-multiport.conf b/config/action.d/iptables-multiport.conf
index ad554f5c..d062f74d 100644
--- a/config/action.d/iptables-multiport.conf
+++ b/config/action.d/iptables-multiport.conf
@@ -27,7 +27,7 @@ actionstop = iptables -D <chain> -p <protocol> -m multiport --dports <port> -j f
 # Notes.:  command executed once before each actionban command
 # Values:  CMD
 #
-actioncheck = iptables -n -L <chain> | grep -q fail2ban-<name>
+actioncheck = iptables -n -L <chain> | grep -q 'fail2ban-<name>[ \t]'
 
 # Option:  actionban
 # Notes.:  command executed when banning an IP. Take care that the
diff --git a/config/action.d/iptables-new.conf b/config/action.d/iptables-new.conf
index c249de2d..92bd9a55 100644
--- a/config/action.d/iptables-new.conf
+++ b/config/action.d/iptables-new.conf
@@ -29,7 +29,7 @@ actionstop = iptables -D <chain> -m state --state NEW -p <protocol> --dport <por
 # Notes.:  command executed once before each actionban command
 # Values:  CMD
 #
-actioncheck = iptables -n -L <chain> | grep -q fail2ban-<name>
+actioncheck = iptables -n -L <chain> | grep -q 'fail2ban-<name>[ \t]'
 
 # Option:  actionban
 # Notes.:  command executed when banning an IP. Take care that the
diff --git a/config/action.d/iptables.conf b/config/action.d/iptables.conf
index 09cfb98b..a846f971 100644
--- a/config/action.d/iptables.conf
+++ b/config/action.d/iptables.conf
@@ -27,7 +27,7 @@ actionstop = iptables -D <chain> -p <protocol> --dport <port> -j fail2ban-<name>
 # Notes.:  command executed once before each actionban command
 # Values:  CMD
 #
-actioncheck = iptables -n -L <chain> | grep -q fail2ban-<name>
+actioncheck = iptables -n -L <chain> | grep -q 'fail2ban-<name>[ \t]'
 
 # Option:  actionban
 # Notes.:  command executed when banning an IP. Take care that the