diff --git a/scripts/ZoneMinder/lib/ZoneMinder/Control/Dahua.pm b/scripts/ZoneMinder/lib/ZoneMinder/Control/Dahua.pm
index e274aaaf7..e55a6da1c 100644
--- a/scripts/ZoneMinder/lib/ZoneMinder/Control/Dahua.pm
+++ b/scripts/ZoneMinder/lib/ZoneMinder/Control/Dahua.pm
@@ -84,7 +84,7 @@ sub open
 
     use LWP::UserAgent;
     $self->{ua} = LWP::UserAgent->new(keep_alive => 1);
-    $self->{ua}->agent("ZoneMinder Control Agent/".$ZoneMinder::Base::ZM_VERSION);
+    $self->{ua}->agent("ZoneMinder Control Agent/".ZoneMinder::Base::ZM_VERSION);
     $self->{state} = 'closed';
 #   credentials:  ("ip:port" (no prefix!), realm (string), username (string), password (string)
     $self->{ua}->credentials($ADDRESS, $REALM, $USERNAME, $PASSWORD);
diff --git a/scripts/ZoneMinder/lib/ZoneMinder/Control/PSIA.pm b/scripts/ZoneMinder/lib/ZoneMinder/Control/PSIA.pm
index fe067fe1f..438c5cff5 100644
--- a/scripts/ZoneMinder/lib/ZoneMinder/Control/PSIA.pm
+++ b/scripts/ZoneMinder/lib/ZoneMinder/Control/PSIA.pm
@@ -40,7 +40,7 @@ sub open
 
     use LWP::UserAgent;
     $self->{ua} = LWP::UserAgent->new;
-    $self->{ua}->agent( "ZoneMinder Control Agent/".$ZoneMinder::Base::ZM_VERSION );
+    $self->{ua}->agent( "ZoneMinder Control Agent/".ZoneMinder::Base::ZM_VERSION );
     $self->{state} = 'closed';
     Debug( "sendCmd credentials control address:'".$ADDRESS
             ."'  realm:'" . $REALM
diff --git a/scripts/ZoneMinder/lib/ZoneMinder/Control/Trendnet.pm b/scripts/ZoneMinder/lib/ZoneMinder/Control/Trendnet.pm
index 4ee710297..c57fc5c62 100644
--- a/scripts/ZoneMinder/lib/ZoneMinder/Control/Trendnet.pm
+++ b/scripts/ZoneMinder/lib/ZoneMinder/Control/Trendnet.pm
@@ -45,7 +45,7 @@ sub open {
 
   use LWP::UserAgent;
   $self->{ua} = LWP::UserAgent->new;
-  $self->{ua}->agent('ZoneMinder Control Agent/'.$ZoneMinder::Base::ZM_VERSION);
+  $self->{ua}->agent('ZoneMinder Control Agent/'.ZoneMinder::Base::ZM_VERSION);
   $self->{state} = 'closed';
   #   credentials:  ("ip:port" (no prefix!), realm (string), username (string), password (string)
   Debug ( "sendCmd credentials control address:'".$ADDRESS