diff --git a/src/main/java/net/floodlightcontroller/core/internal/OFSwitchImpl.java b/src/main/java/net/floodlightcontroller/core/internal/OFSwitchImpl.java
index 467c74a..3824fdc 100644
--- a/src/main/java/net/floodlightcontroller/core/internal/OFSwitchImpl.java
+++ b/src/main/java/net/floodlightcontroller/core/internal/OFSwitchImpl.java
@@ -49,7 +49,7 @@
 import org.codehaus.jackson.annotate.JsonIgnore;
 import org.codehaus.jackson.annotate.JsonProperty;
 import org.codehaus.jackson.map.annotate.JsonSerialize;
-import org.codehaus.jackson.map.ser.std.ToStringSerializer;
+import org.codehaus.jackson.map.ser.ToStringSerializer;
 import org.jboss.netty.channel.Channel;
 import org.openflow.protocol.OFFeaturesReply;
 import org.openflow.protocol.OFFeaturesRequest;
@@ -73,6 +73,7 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+
 /**
  * This is the internal representation of an openflow switch.
  */
diff --git a/src/main/java/net/floodlightcontroller/devicemanager/SwitchPort.java b/src/main/java/net/floodlightcontroller/devicemanager/SwitchPort.java
index 725d699..7426163 100644
--- a/src/main/java/net/floodlightcontroller/devicemanager/SwitchPort.java
+++ b/src/main/java/net/floodlightcontroller/devicemanager/SwitchPort.java
@@ -20,7 +20,7 @@
 import net.floodlightcontroller.core.web.serializers.DPIDSerializer;
 
 import org.codehaus.jackson.map.annotate.JsonSerialize;
-import org.codehaus.jackson.map.ser.std.ToStringSerializer;
+import org.codehaus.jackson.map.ser.ToStringSerializer;
 
 /**
  * A simple switch DPID/port pair
diff --git a/src/main/java/net/onrc/onos/ofcontroller/linkdiscovery/ILinkDiscovery.java b/src/main/java/net/onrc/onos/ofcontroller/linkdiscovery/ILinkDiscovery.java
index cdb71be..0b4437b 100644
--- a/src/main/java/net/onrc/onos/ofcontroller/linkdiscovery/ILinkDiscovery.java
+++ b/src/main/java/net/onrc/onos/ofcontroller/linkdiscovery/ILinkDiscovery.java
@@ -3,7 +3,7 @@
 import net.floodlightcontroller.core.IUpdate;
 
 import org.codehaus.jackson.map.annotate.JsonSerialize;
-import org.codehaus.jackson.map.ser.std.ToStringSerializer;
+import org.codehaus.jackson.map.ser.ToStringSerializer;
 import org.openflow.util.HexString;
 
 public interface ILinkDiscovery {