diff --git a/internal/event/targetidset.go b/internal/event/targetidset.go
index 34cee4ddc..eb6e0687e 100644
--- a/internal/event/targetidset.go
+++ b/internal/event/targetidset.go
@@ -20,11 +20,6 @@ package event
 // TargetIDSet - Set representation of TargetIDs.
 type TargetIDSet map[TargetID]struct{}
 
-// IsEmpty returns true if the set is empty.
-func (set TargetIDSet) IsEmpty() bool {
-	return len(set) != 0
-}
-
 // Clone - returns copy of this set.
 func (set TargetIDSet) Clone() TargetIDSet {
 	setCopy := NewTargetIDSet()