--- a/clean.sh
+++ b/clean.sh
@@ -50,7 +50,7 @@
 #     probably machine-generated translation of DocBook (*.sgml) files
 #   core
 #     probably a Unix core dump -- not part of the sources anyway
-#   *.o, *.lib, *.nm
+#   *.o, *.lib, *.nm, a.out
 #     results of C-style linking, assembling, etc.
 #   *.core, *.map
 #     looks like SBCL SAVE-LISP-AND-DIE or GENESIS output, and
@@ -69,6 +69,8 @@
 #   *.lisp-obj, *.fasl, *.x86f, *.axpf, *.lbytef, *.lib
 #     typical extensions for fasl files (not just from SBCL, but
 #     from other Lisp systems which might be used as xc hosts)
+#   test-passed
+#     generated by automatic directory-test-thyself procedure
 find . \( \
 	-type l -o \
 	-name '*~' -o \
@@ -90,7 +92,9 @@
 	-name '*.target-obj' -o \
 	-name '*.lib' -o \
 	-name '*.tmp' -o \
+	-name '*.lisp-temp' -o \
 	-name '*.o' -o \
+	-name 'a.out' -o \
 	-name 'sbcl' -o \
 	-name 'sbcl.h' -o \
 	-name 'depend' -o \