diff --git a/alvra.py b/alvra.py
index fd74829..37420da 100755
--- a/alvra.py
+++ b/alvra.py
@@ -100,7 +100,7 @@ scansJF = Deprecator("scansJF", "scan")
 #)
 
 
-dummy = DummyAdjustable(name="A Dummy Adjustable")
+dummy = DummyAdjustable("A Dummy Adjustable")
 
 
 def huber_pos(x, y, z, att=None):
diff --git a/devices.py b/devices.py
index ed40f01..e035acd 100644
--- a/devices.py
+++ b/devices.py
@@ -180,17 +180,17 @@ refLaser = sd.xoptics.reflaser.RefLaser_Aramis(
     description="Alvra beamline reference laser before KBs (OLAS)"
 )
 
-#slitSwitch = sd.xoptics.slits.SlitBlades_old(
+#slitSwitch = sd.xoptics.slits.SlitUnit(
 #    "SAROP11-OAPU104",
 #    description="Slit in Optics hutch after Photon switchyard and before Alvra mono"
 #)
 
-slitUnd = sd.xoptics.slits.SlitFourBlades_old(
+slitUnd = sd.xoptics.slits.SlitTwinUnit(
     "SARFE10-OAPU044",
     description="Slit after Undulator"
 )
 
-slitAttExp = sd.xoptics.slits.SlitPosWidth_old(
+slitAttExp = sd.xoptics.slits.SlitUnitCW(
     "SAROP11-OAPU120",
     description="Slits behind attenuator"
 )