diff --git a/java_gen/templates/_imports.java b/java_gen/templates/_imports.java
index 50ba198..bac7065 100644
--- a/java_gen/templates/_imports.java
+++ b/java_gen/templates/_imports.java
@@ -13,3 +13,4 @@
 import org.openflow.exceptions.*;
 import org.jboss.netty.buffer.ChannelBuffer;
 import org.jboss.netty.buffer.ChannelBuffers;
+import com.google.common.collect.ImmutableList;