diff --git a/src/main/java/net/floodlightcontroller/core/internal/TopoSwitchServiceImpl.java b/src/main/java/net/floodlightcontroller/core/internal/TopoSwitchServiceImpl.java
index 9f63fd7..931802e 100644
--- a/src/main/java/net/floodlightcontroller/core/internal/TopoSwitchServiceImpl.java
+++ b/src/main/java/net/floodlightcontroller/core/internal/TopoSwitchServiceImpl.java
@@ -1,14 +1,14 @@
 package net.floodlightcontroller.core.internal;
 
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
 import net.floodlightcontroller.core.INetMapTopologyObjects.IPortObject;
 import net.floodlightcontroller.core.INetMapTopologyObjects.ISwitchObject;
 import net.floodlightcontroller.core.INetMapTopologyService.ITopoSwitchService;
 import net.onrc.onos.util.GraphDBConnection;
 import net.onrc.onos.util.GraphDBConnection.Transaction;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 public class TopoSwitchServiceImpl implements ITopoSwitchService {
 	
 	private GraphDBConnection conn;
@@ -21,7 +21,7 @@
 	
 	@Override
 	public void close() {
-		conn.endTx(Transaction.COMMIT);
+
 		conn.close();
 	}