diff --git a/Info/CiscoStack.pm b/Info/CiscoStack.pm
index f9eda12a..e697bced 100644
--- a/Info/CiscoStack.pm
+++ b/Info/CiscoStack.pm
@@ -215,9 +215,8 @@ sub i_speed_admin {
     my $partial = shift;
 
     my %i_speed_admin;
-    my $p_port  = $stack->p_port() || {};
-    my %mapping = reverse %$p_port;
-    my $p_speed = $stack->p_speed( $mapping{$partial} );
+    my $p_port  = $stack->p_port()  || {};
+    my $p_speed = $stack->p_speed() || {};
 
     my %speeds = (
         'autoDetect'      => 'auto',