diff --git a/gc-7.2alpha4-install_dups.patch b/gc-7.2alpha4-install_dups.patch
new file mode 100644
index 0000000..345768d
--- /dev/null
+++ b/gc-7.2alpha4-install_dups.patch
@@ -0,0 +1,20 @@
+diff -up gc-7.2alpha4/libatomic_ops/doc/Makefile.am.install_dups gc-7.2alpha4/libatomic_ops/doc/Makefile.am
+--- gc-7.2alpha4/libatomic_ops/doc/Makefile.am.install_dups	2009-09-29 08:41:50.000000000 -0500
++++ gc-7.2alpha4/libatomic_ops/doc/Makefile.am	2009-12-11 07:31:08.816754621 -0600
+@@ -1,3 +1,3 @@
+ # installed documentation
+ #
+-dist_pkgdata_DATA=COPYING LICENSING.txt README.txt COPYING README_stack.txt README_malloc.txt README_win32.txt
++dist_pkgdata_DATA=COPYING LICENSING.txt README.txt README_stack.txt README_malloc.txt README_win32.txt
+diff -up gc-7.2alpha4/libatomic_ops/doc/Makefile.in.install_dups gc-7.2alpha4/libatomic_ops/doc/Makefile.in
+--- gc-7.2alpha4/libatomic_ops/doc/Makefile.in.install_dups	2009-12-11 07:28:57.584740154 -0600
++++ gc-7.2alpha4/libatomic_ops/doc/Makefile.in	2009-12-11 07:31:44.285741617 -0600
+@@ -177,7 +177,7 @@ top_srcdir = @top_srcdir@
+ 
+ # installed documentation
+ #
+-dist_pkgdata_DATA = COPYING LICENSING.txt README.txt COPYING README_stack.txt README_malloc.txt README_win32.txt
++dist_pkgdata_DATA = COPYING LICENSING.txt README.txt README_stack.txt README_malloc.txt README_win32.txt
+ all: all-am
+ 
+ .SUFFIXES: