diff --git a/pykat/ifo/aligo/plot.py b/pykat/ifo/aligo/plot.py
index c901b125a7d8f1d6cfdf0ac60cb5194bd370649f..72d780dbb6ede6faac1a27679bcbd83ad7f1d39b 100644
--- a/pykat/ifo/aligo/plot.py
+++ b/pykat/ifo/aligo/plot.py
@@ -175,7 +175,7 @@ def error_signals(_kat, xlimits=[-1,1], DOFs=None, plotDOFs=None,
         
         # Get a lock offset if used
         if (d.name + '_lock') in _kat.commands:
-            DC_Offset = _kat.commands[d.name + '_lock'].offset.value
+            DC_Offset = _kat.commands[d.name + '_lock'].offset
         
         if DC_Offset is None:
             DC_Offset = 0
diff --git a/pykat/ifo/aplus/plot.py b/pykat/ifo/aplus/plot.py
index c209eb8b1991137d65456026e660c2deebd14a0f..0c0efb8a9e78c63791293a543cb6106ea4b85899 100644
--- a/pykat/ifo/aplus/plot.py
+++ b/pykat/ifo/aplus/plot.py
@@ -170,7 +170,7 @@ def error_signals(_kat, xlimits=[-1,1], DOFs=None, plotDOFs=None,
         
         # Get a lock offset if used
         if (d.name + '_lock') in _kat.commands:
-            DC_Offset = _kat.commands[d.name + '_lock'].offset.value
+            DC_Offset = _kat.commands[d.name + '_lock'].offset
         
         if DC_Offset is None:
             DC_Offset = 0