1 files changed, 1 insertions, 1 deletions

diff --git a/WMD.py b/WMD.py
index dd43cd5..cd0e13c 100644
--- a/WMD.py
+++ b/WMD.py
@@ -32,7 +32,7 @@ def main(args):
     run_paradigm = list()
 
     if input_paradigm == "all":
-        run_paradigm.extend("matching", "retrieval")
+        run_paradigm.extend(("matching", "retrieval"))
     else:
         run_paradigm.append(input_paradigm)