diff --git a/voluseg/VolusegProcessor.py b/voluseg/VolusegProcessor.py
index 9ea1ee6..f70cc1e 100644
--- a/voluseg/VolusegProcessor.py
+++ b/voluseg/VolusegProcessor.py
@@ -29,7 +29,7 @@ def run(context: VolusegContext):
         # set and save parameters
         parameters0 = voluseg.parameter_dictionary()
         parameters0["dir_ants"] = "/ants-2.5.3/bin/"
-        parameters0["dir_input"] = "/voluseg/data/"
+        parameters0["dir_input"] = url
         parameters0["dir_output"] = "/tmp/voluseg_output"
 
         # user-defined parameters