diff --git a/xCAT-client/pods/man1/chdef.1.pod b/xCAT-client/pods/man1/chdef.1.pod
index 402e117e0..5a02b6cc6 100644
--- a/xCAT-client/pods/man1/chdef.1.pod
+++ b/xCAT-client/pods/man1/chdef.1.pod
@@ -56,7 +56,7 @@ Verbose mode.
 
 =item B<-w> I<attr==val> B<-w> I<attr=~val> ... 
 
-Use one or multiple -w flags to specify the selection string that can be used to select objects. The operators ==, !=, =~ and !~ are available. Use the help option to get a list of validattributes for each object type.
+Use one or multiple -w flags to specify the selection string that can be used to select objects. The operators ==, !=, =~ and !~ are available. Use the help option to get a list of valid attributes for each object type.
 
 Note: the operator !~ will be parsed by shell, if you want to use !~ in the selection string, use single quote instead. For example:-w 'mgt!~ipmi'.
 
diff --git a/xCAT-client/pods/man1/lsdef.1.pod b/xCAT-client/pods/man1/lsdef.1.pod
index 2c5c4de3b..50af3af8a 100644
--- a/xCAT-client/pods/man1/lsdef.1.pod
+++ b/xCAT-client/pods/man1/lsdef.1.pod
@@ -56,7 +56,7 @@ Verbose mode.
 
 =item B<-w> I<attr==val> B<-w> I<attr=~val> ...
 
-Use one or multiple -w flags to specify the selection string that can be used to select objects. The operators ==, !=, =~ and !~ are available. Use the help option to get a list of validattributes for each object type.
+Use one or multiple -w flags to specify the selection string that can be used to select objects. The operators ==, !=, =~ and !~ are available. Use the help option to get a list of valid attributes for each object type.
 
 Note: if the "val" fields includes spaces or any other characters that will be parsed by shell, the "attr<operator>val" needs to be quoted. If the operator is "!~", the "attr<operator>val" needs to be quoted using single quote.
 
diff --git a/xCAT-client/pods/man1/mkdef.1.pod b/xCAT-client/pods/man1/mkdef.1.pod
index c205453e4..9e6101206 100644
--- a/xCAT-client/pods/man1/mkdef.1.pod
+++ b/xCAT-client/pods/man1/mkdef.1.pod
@@ -54,7 +54,7 @@ Verbose mode.
 
 =item B<-w> I<attr==val> B<-w> I<attr=~val> ... 
 
-Use one or multiple -w flags to specify the selection string that can be used to select objects. The operators ==, !=, =~ and !~ are available. For mkdef commmand, the -w flag only makes sense for creating dynamic node group. Use the help option to get a list of validattributes for each object type.
+Use one or multiple -w flags to specify the selection string that can be used to select objects. The operators ==, !=, =~ and !~ are available. For mkdef commmand, the -w flag only makes sense for creating dynamic node group. Use the help option to get a list of valid attributes for each object type.
 
 Note: if the "val" fields includes spaces or any other characters that will be parsed by shell, the "attr<operator>val" needs to be quoted. If the operator is "!~", the "attr<operator>val" needs to be quoted using single quote.