diff --git a/javatests/google/registry/flows/domain/DomainTransferApproveFlowTest.java b/javatests/google/registry/flows/domain/DomainTransferApproveFlowTest.java
index 4e6d0dac4..ac0351c53 100644
--- a/javatests/google/registry/flows/domain/DomainTransferApproveFlowTest.java
+++ b/javatests/google/registry/flows/domain/DomainTransferApproveFlowTest.java
@@ -300,9 +300,7 @@ public class DomainTransferApproveFlowTest
                     .build())
             .toArray(BillingEvent.class));
     // There should be no grace period.
-    assertGracePeriods(
-        domain.getGracePeriods(),
-        ImmutableMap.of());
+    assertGracePeriods(domain.getGracePeriods(), ImmutableMap.<GracePeriod, BillingEvent>of());
   }
 
   private void doSuccessfulTest(String tld, String commandFilename, String expectedXmlFilename)
diff --git a/javatests/google/registry/flows/domain/DomainTransferRequestFlowTest.java b/javatests/google/registry/flows/domain/DomainTransferRequestFlowTest.java
index 678f435fd..d7e661f8b 100644
--- a/javatests/google/registry/flows/domain/DomainTransferRequestFlowTest.java
+++ b/javatests/google/registry/flows/domain/DomainTransferRequestFlowTest.java
@@ -320,7 +320,9 @@ public class DomainTransferRequestFlowTest
     // gaining and losing registrars should have a new poll message.
     DomainResource domainAfterAutomaticTransfer = domain.cloneProjectedAtTime(implicitTransferTime);
     // There should be no grace period.
-    assertGracePeriods(domainAfterAutomaticTransfer.getGracePeriods(), ImmutableMap.of());
+    assertGracePeriods(
+        domainAfterAutomaticTransfer.getGracePeriods(),
+        ImmutableMap.<GracePeriod, BillingEvent>of());
   }
 
   private void assertPollMessagesEmitted(