diff --git a/google-cloud-spanner/src/test/java/com/google/cloud/spanner/IsRetryableInternalErrorTest.java b/google-cloud-spanner/src/test/java/com/google/cloud/spanner/IsRetryableInternalErrorTest.java
index 366b80a7513..172fa23f826 100644
--- a/google-cloud-spanner/src/test/java/com/google/cloud/spanner/IsRetryableInternalErrorTest.java
+++ b/google-cloud-spanner/src/test/java/com/google/cloud/spanner/IsRetryableInternalErrorTest.java
@@ -123,7 +123,7 @@ public void rstStreamInternalExceptionIsRetryable() {
             GrpcStatusCode.of(Code.INTERNAL),
             false);
 
-    assertThat(predicate.apply(e)).isTrue();
+    assertTrue(predicate.apply(e));
   }
 
   @Test