diff --git a/iexcode/instruments/AD_utilities.py b/iexcode/instruments/AD_utilities.py
index 0b748a80850bfaf93c1b2df19642695793ee0a1a..06da64e8c16755eaa650af6a1350cc2da0397bd5 100644
--- a/iexcode/instruments/AD_utilities.py
+++ b/iexcode/instruments/AD_utilities.py
@@ -74,7 +74,7 @@ def AD_SaveFileSetup(ADplugin,mda,**kwargs):
         FileTemplate="%s%s_%4.4d."+ext; format for filename first %s = filepath, second %s = prefix
         
     """
-    kwargs.setdefault("userpath",dirname(mda.filepath())
+    kwargs.setdefault("userpath",dirname(mda.filepath()))
     kwargs.setdefault("subfolder",ADplugin.split(":")[-2][:-1])
 
     kwargs.setdefault("prefix",ADplugin.split(":")[-2][:-1])