diff --git a/scripts/basop_create_ignorelist_for_ubsan.py b/scripts/basop_create_ignorelist_for_ubsan.py
index 7369fc6c9f59730027337a26d6d1bf64e4945040..e6dfdfa0752daf92b00577538931afe44636352b 100644
--- a/scripts/basop_create_ignorelist_for_ubsan.py
+++ b/scripts/basop_create_ignorelist_for_ubsan.py
@@ -1,7 +1,7 @@
 import pathlib
 
-all_c_files = pathlib.Path(".").glob("lib_*/*.c")
-ivas_c_files = pathlib.Path(".").glob("lib_*/ivas*.c")
+all_c_files = pathlib.Path(".").glob("lib_*/*.[ch]")
+ivas_c_files = pathlib.Path(".").glob("lib_*/ivas*.[ch]")
 non_ivas_c_files = sorted(set(all_c_files) - set(ivas_c_files))
 
 with open("ubsan_ignorelist.txt", "w") as f: