diff --git a/core/src/main/java/com/google/common/truth/MultimapSubject.java b/core/src/main/java/com/google/common/truth/MultimapSubject.java
index 96cef441b..6ccfc6752 100644
--- a/core/src/main/java/com/google/common/truth/MultimapSubject.java
+++ b/core/src/main/java/com/google/common/truth/MultimapSubject.java
@@ -34,6 +34,7 @@
 import com.google.common.collect.LinkedListMultimap;
 import com.google.common.collect.ListMultimap;
 import com.google.common.collect.Lists;
+import com.google.common.collect.Maps;
 import com.google.common.collect.Multimap;
 import com.google.common.collect.SetMultimap;
 import com.google.common.collect.Sets;
@@ -587,7 +588,7 @@ public void containsEntry(@Nullable Object expectedKey, E expectedValue) {
                       .add(
                           fact(
                               "found match (but failing because of exception)",
-                              immutableEntry(expectedKey, actualValue)))
+                              Maps.<@Nullable Object, A>immutableEntry(expectedKey, actualValue)))
                       .add(
                           fact(
                               "full contents",