diff --git a/src/main/java/net/onrc/onos/ofcontroller/core/internal/TopoSwitchServiceImpl.java b/src/main/java/net/onrc/onos/ofcontroller/core/internal/TopoSwitchServiceImpl.java
index 978fcde..cd3cf15 100644
--- a/src/main/java/net/onrc/onos/ofcontroller/core/internal/TopoSwitchServiceImpl.java
+++ b/src/main/java/net/onrc/onos/ofcontroller/core/internal/TopoSwitchServiceImpl.java
@@ -18,7 +18,7 @@
 	}
 
 	public TopoSwitchServiceImpl() {
-		this("/tmp/cassandra.titan");
+		this("");
 	}
 	
 	public void finalize() {