diff -u a/tests/foreign.at b/tests/foreign.at
--- a/tests/foreign.at
+++ b/tests/foreign.at
@@ -57,7 +57,7 @@
 # Make sure at-path contains something valid, and let the test suite
 # display it when verbose.  And fail, skipping would too easily hide
 # problems.
-AT_CHECK([sed -n ["s,^.*\`\\(/[^']*\\)'.*,\\1,p"] stdout], [0], [stdout])
+AT_CHECK([sed -n ["s,^[^']*[\`']\\(/[^']*\\)'.*,\\1,p"] stdout], [0], [stdout])
 AT_CHECK([test -f "`sed -n 1p stdout`"])

 # Older libtoolize installed everything but install-sh...