diff --git a/common/create_spice_library.py b/common/create_spice_library.py
index 6b8aa83..a25ac34 100755
--- a/common/create_spice_library.py
+++ b/common/create_spice_library.py
@@ -36,7 +36,7 @@
 
 #----------------------------------------------------------------------------
 
-def create_spice_library(destlibdir, destlib, spiext, do_compile_only, do_stub, excludelist):
+def create_spice_library(destlibdir, destlib, spiext, do_compile_only=False, do_stub=False, excludelist=[]):
 
     fformat = 'CDL' if spiext == '.cdl' else 'SPICE'