Add missing "import" statement.
diff --git a/src/main/java/net/floodlightcontroller/util/FlowEntry.java b/src/main/java/net/floodlightcontroller/util/FlowEntry.java
index 3e29c78..21f3a9e 100644
--- a/src/main/java/net/floodlightcontroller/util/FlowEntry.java
+++ b/src/main/java/net/floodlightcontroller/util/FlowEntry.java
@@ -4,6 +4,7 @@
 
 import net.floodlightcontroller.util.Dpid;
 import net.floodlightcontroller.util.FlowEntryAction;
+import net.floodlightcontroller.util.FlowEntryErrorState;
 import net.floodlightcontroller.util.FlowEntryId;
 import net.floodlightcontroller.util.FlowEntryMatch;
 import net.floodlightcontroller.util.FlowEntrySwitchState;