diff --git a/library/core/src/test/java/com/google/android/exoplayer2/text/ttml/TtmlRenderUtilTest.java b/library/core/src/test/java/com/google/android/exoplayer2/text/ttml/TtmlRenderUtilTest.java
index 40fd6f288a..747cbd0c7b 100644
--- a/library/core/src/test/java/com/google/android/exoplayer2/text/ttml/TtmlRenderUtilTest.java
+++ b/library/core/src/test/java/com/google/android/exoplayer2/text/ttml/TtmlRenderUtilTest.java
@@ -54,8 +54,8 @@ public final class TtmlRenderUtilTest {
     String[] styleIds = {"s0", "s1"};
 
     TtmlStyle resolved = TtmlRenderUtil.resolveStyle(null, styleIds, globalStyles);
-    assertThat(resolved).isNotSameAs(globalStyles.get("s0"));
-    assertThat(resolved).isNotSameAs(globalStyles.get("s1"));
+    assertThat(resolved).isNotSameInstanceAs(globalStyles.get("s0"));
+    assertThat(resolved).isNotSameInstanceAs(globalStyles.get("s1"));
     assertThat(resolved.getId()).isNull();
 
     // inherited from s0