diff --git a/extensions/multibindings/src/com/google/inject/multibindings/MapBinder.java b/extensions/multibindings/src/com/google/inject/multibindings/MapBinder.java
index fe596a5..68610a3 100644
--- a/extensions/multibindings/src/com/google/inject/multibindings/MapBinder.java
+++ b/extensions/multibindings/src/com/google/inject/multibindings/MapBinder.java
@@ -605,7 +605,7 @@
     /**
      * Binds {@code Map<K, Set<V>>} and {{@code Map<K, Set<Provider<V>>>}.
      */
-    private static final class MultimapBinder<K, V> implements Module {
+    static final class MultimapBinder<K, V> implements Module {
 
       private final Key<Map<K, Set<V>>> multimapKey;
       private final Key<Map<K, Set<Provider<V>>>> providerMultimapKey;