diff --git a/android/util.go b/android/util.go
index e8d9301..39b9c7a 100644
--- a/android/util.go
+++ b/android/util.go
@@ -213,10 +213,12 @@
 }
 
 // ListSetDifference checks if the two lists contain the same elements. It returns
-// a boolean which is true if there is a difference, and then returns lists of elements
+// a boolean which is true if there is a difference, and then returns lists of unique elements
 // that are in l1 but not l2, and l2 but not l1.
 func ListSetDifference[T comparable](l1, l2 []T) (bool, []T, []T) {
 	listsDiffer := false
+	l1 = firstUnique(l1)
+	l2 = firstUnique(l2)
 	diff1 := []T{}
 	diff2 := []T{}
 	m1 := setFromList(l1)