diff --git a/ChangeLog b/ChangeLog
index 194422d8..ee5e8e7c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,8 @@
 2006-09-03  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>
 
+	* tests/testsuite.at: Test `unset' on a set variable; older
+	bash versions return 1 if the variable was not set.
+
 	* tests/am-subdir.at, tests/early-libtool.at: Fix the LF vs.
 	CRLF related failures on MinGW by grepping for good output
 	instead of using AT_CHECK's `expout'.
diff --git a/tests/testsuite.at b/tests/testsuite.at
index ad97009d..ab11e5c6 100644
--- a/tests/testsuite.at
+++ b/tests/testsuite.at
@@ -35,7 +35,7 @@ configure_options=
 if test -n "$host_alias"; then
   configure_options="--host $host_alias"
 fi
-if (unset FOO) >/dev/null 2>&1; then
+if (FOO=bar; unset FOO) >/dev/null 2>&1; then
   unset=unset
 else
   unset=false