diff --git a/script/Diagnostics/WireScan.py b/script/Diagnostics/WireScan.py
index 4da4ec7..17a12a7 100644
--- a/script/Diagnostics/WireScan.py
+++ b/script/Diagnostics/WireScan.py
@@ -50,7 +50,7 @@ st.waitCacheChange(10000)    #Wait stream be running before starting scan
 class w_pos(Readable):
     def read(self):
         #return scanner.get_sel_wire_pos(st.getChildren()[0].take())
-        return scanner.get_sel_wire_pos(scanner.motor_bs_readback)
+        return scanner.get_sel_wire_pos(scanner.motor_bs_readback.read())
 
 #End of  scan checking
 scan_complete = None