diff --git a/lib/pf/SNMP/MockedSwitch.pm b/lib/pf/SNMP/MockedSwitch.pm
index 251c1dd3e289..eaaa1b5472a6 100644
--- a/lib/pf/SNMP/MockedSwitch.pm
+++ b/lib/pf/SNMP/MockedSwitch.pm
@@ -2859,7 +2859,7 @@ return IfIndexByNasPortId
 
 =cut
 
-sub getIfIndexiByNasPortId {
+sub getIfIndexByNasPortId {
     my ($this ) = @_;
     return $FALSE;
 }