diff --git a/app/src/test/java/eu/ztsh/garmin/data/GarminMapperTest.kt b/app/src/test/java/eu/ztsh/garmin/data/GarminMapperTest.kt
index 82be573..8ae4482 100644
--- a/app/src/test/java/eu/ztsh/garmin/data/GarminMapperTest.kt
+++ b/app/src/test/java/eu/ztsh/garmin/data/GarminMapperTest.kt
@@ -9,8 +9,8 @@ class GarminMapperTest {
     @Test
     fun linesTest() {
         linesTest(
-            listOf(Lane.DotsLeft),
-            listOf(),
+            setOf(Lane.DotsLeft),
+            setOf(),
             intArrayOf(2, 128, 0),
             intArrayOf(16, 123, 9, 3, 0, 0, 0, 85, 21, 2, 128, 0, 141, 16, 3)
         )
@@ -51,14 +51,14 @@ class GarminMapperTest {
             intArrayOf(16, 123, 9, 3, 0, 0, 0, 85, 21, 2, 64, 2, 203, 16, 3)
         )
         linesTest(
-            listOf(Lane.DotsRight),
-            listOf(Lane.OuterRight, Lane.MiddleRight, Lane.InnerRight, Lane.InnerLeft, Lane.MiddleLeft, Lane.OuterLeft),
+            setOf(Lane.DotsRight),
+            setOf(Lane.OuterRight, Lane.MiddleRight, Lane.InnerRight, Lane.InnerLeft, Lane.MiddleLeft, Lane.OuterLeft),
             intArrayOf(2, 1, 126),
             intArrayOf(16, 123, 9, 3, 0, 0, 0, 85, 21, 2, 1, 126, 142, 16, 3)
         )
         linesTest(
-            listOf(),
-            listOf(),
+            setOf(),
+            setOf(),
             intArrayOf(2, 0, 0),
             intArrayOf(16, 123, 9, 3, 0, 0, 0, 85, 21, 2, 0, 0, 13, 16, 3)
         )
@@ -249,10 +249,10 @@ class GarminMapperTest {
     }
 
     private fun linesTest(outlines: Lane, arrows: Lane, expectedRaw: IntArray, expectedBoxed: IntArray) {
-        linesTest(listOf(outlines), listOf(arrows), expectedRaw, expectedBoxed)
+        linesTest(setOf(outlines), setOf(arrows), expectedRaw, expectedBoxed)
     }
 
-    private fun linesTest(outlines: List<Lane>, arrows: List<Lane>, expectedRaw: IntArray, expectedBoxed: IntArray) {
+    private fun linesTest(outlines: Set<Lane>, arrows: Set<Lane>, expectedRaw: IntArray, expectedBoxed: IntArray) {
         val lanes = Lanes(Arrows(arrows), Arrows(outlines))
         makeAssertions(GarminMapper.map(lanes), expectedRaw, expectedBoxed)
     }