diff --git a/libisoburn/trunk/xorriso/xorriso_makefile_am.txt b/libisoburn/trunk/xorriso/xorriso_makefile_am.txt
index 8b97027c..70d9dc86 100644
--- a/libisoburn/trunk/xorriso/xorriso_makefile_am.txt
+++ b/libisoburn/trunk/xorriso/xorriso_makefile_am.txt
@@ -272,6 +272,11 @@ buildstamp:
 buildstamped: buildstamp
 	make
 
+# "make clean" shall remove a few stubborn .libs directories
+# which George Danchev reported Dec 03 2011.
+# Learned from: http://www.gnu.org/software/automake/manual/automake.html#Clean
+clean-local:
+	-rm -rf xorriso/.libs test/.libs
 
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