diff --git a/wetb/prepost/dlctemplate.py b/wetb/prepost/dlctemplate.py
index 000b1b1ed8d0409cf03254c71fe3c79b28be2aa5..dd3715e9060c4a4b9078295bc9a935da8e8d4614 100644
--- a/wetb/prepost/dlctemplate.py
+++ b/wetb/prepost/dlctemplate.py
@@ -290,9 +290,8 @@ def launch_dlcs_excel(sim_id, silent=False, verbose=False, pbs_turb=False,
     for (dirpath, dirnames, fnames) in os.walk(P_SOURCE):
         # remove all zip files
         for i, fname in enumerate(fnames):
-            if fname.endswith('.zip'):
-                fnames.pop(i)
-        f_ziproot.extend(fnames)
+            if not fname.endswith('.zip'):
+                f_ziproot.append(fname)
         break
     # and add those files
     for opt in opt_tags: