diff --git a/sys-fs/e2fsprogs/files/e2fsprogs-1.38-tests-locale.patch b/sys-fs/e2fsprogs/files/e2fsprogs-1.38-tests-locale.patch
new file mode 100644
--- /dev/null
+++ b/sys-fs/e2fsprogs/files/e2fsprogs-1.38-tests-locale.patch
@@ -0,0 +1,26 @@
+Since the tests analyze the output messages, force the default locale.
+
+http://bugs.gentoo.org/99766
+
+--- tests/test_script.in
++++ tests/test_script.in
+@@ -3,6 +3,19 @@
+ # Test script for e2fsck
+ #
+ 
++# NLS nuisances.
++for as_var in \
++  LANG LANGUAGE LC_ADDRESS LC_ALL LC_COLLATE LC_CTYPE LC_IDENTIFICATION \
++  LC_MEASUREMENT LC_MESSAGES LC_MONETARY LC_NAME LC_NUMERIC LC_PAPER \
++  LC_TELEPHONE LC_TIME
++do
++  if (set +x; test -z "`(eval $as_var=C; export $as_var) 2>&1`"); then
++    eval $as_var=C; export $as_var
++  else
++    unset $as_var
++  fi
++done
++
+ if test "$1"x = x ; then
+   TESTS=`ls -d $SRCDIR/[a-zA-Z]_* | $EGREP -v "\.failed|\.new"`
+ else