diff --git a/app/src/test/kotlin/com/shonar/desktop/SummaryNotifyTest.kt b/app/src/test/kotlin/com/shonar/desktop/SummaryNotifyTest.kt
index ae4ef7f..fbf7077 100644
--- a/app/src/test/kotlin/com/shonar/desktop/SummaryNotifyTest.kt
+++ b/app/src/test/kotlin/com/shonar/desktop/SummaryNotifyTest.kt
@@ -1,8 +1,9 @@
 package com.shonar.desktop
 
-import kotlin.test.Test
-import kotlin.test.assertEquals
-import kotlin.test.assertTrue
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertNotEquals
+import org.junit.Assert.assertTrue
+import org.junit.Test
 
 class SummaryNotifyTest {
     @Test fun `encode-decode roundtrip is sorted and stable`() {
@@ -12,14 +13,14 @@ class SummaryNotifyTest {
     }
 
     @Test fun `decode tolerates garbage and null`() {
-        assertEquals(emptySet(), SummaryNotify.decode(null))
-        assertEquals(emptySet(), SummaryNotify.decode("not json"))
+        assertEquals(emptySet<String>(), SummaryNotify.decode(null))
+        assertEquals(emptySet<String>(), SummaryNotify.decode("not json"))
         assertEquals(setOf("x.m4a"), SummaryNotify.decode("""["x.m4a",""]"""))
     }
 
     @Test fun `seenKey dedupes per version`() {
         assertEquals("f.m4a#3", SummaryNotify.seenKey("f.m4a", 3))
-        assertTrue(SummaryNotify.seenKey("f.m4a", 3) != SummaryNotify.seenKey("f.m4a", 4))
+        assertNotEquals(SummaryNotify.seenKey("f.m4a", 3), SummaryNotify.seenKey("f.m4a", 4))
     }
 
     @Test fun `trimSeen keeps the newest entries`() {