diff --git a/config/ChangeLog b/config/ChangeLog
index ceea52ed782..4d50df66bbe 100644
--- a/config/ChangeLog
+++ b/config/ChangeLog
@@ -1,3 +1,7 @@
+2009-10-23  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
+
+	* acx.m4 (ACX_CHECK_CYGWIN_CAT_WORKS): Use = with test.
+
 2009-09-09  Paolo Bonzini  <bonzini@gnu.org>
 
 	* stdint.m4 (GCC_HEADER_STDINT): Revert changes to this macro in
diff --git a/config/acx.m4 b/config/acx.m4
index cea08b7204f..b559c03ebdf 100644
--- a/config/acx.m4
+++ b/config/acx.m4
@@ -605,7 +605,7 @@ dnl # See binutils PR 4334 for more details.
 AC_DEFUN([ACX_CHECK_CYGWIN_CAT_WORKS],[
 AC_MSG_CHECKING([to see if cat works as expected])
 echo a >cygwin-cat-check
-if test `cat cygwin-cat-check` == a ; then
+if test `cat cygwin-cat-check` = a ; then
   rm cygwin-cat-check
   AC_MSG_RESULT(yes)
 else
diff --git a/configure b/configure
index db105a549b2..4af7b475754 100755
--- a/configure
+++ b/configure
@@ -3855,7 +3855,7 @@ case "${host}" in
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking to see if cat works as expected" >&5
 $as_echo_n "checking to see if cat works as expected... " >&6; }
 echo a >cygwin-cat-check
-if test `cat cygwin-cat-check` == a ; then
+if test `cat cygwin-cat-check` = a ; then
   rm cygwin-cat-check
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 $as_echo "yes" >&6; }