diff --git a/configure.ac b/configure.ac
index b247aad57..95c3eb246 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1262,12 +1262,12 @@ AM_CONDITIONAL([SYSFSGPIO], [test $build_sysfsgpio = yes])
 AM_CONDITIONAL([USE_LIBUSB0], [test $use_libusb0 = yes])
 AM_CONDITIONAL([USE_LIBUSB1], [test $use_libusb1 = yes])
 AM_CONDITIONAL([IS_CYGWIN], [test $is_cygwin = yes])
-AM_CONDITIONAL([IS_MINGW], [test $is_mingw = ye]s)
-AM_CONDITIONAL([IS_WIN32], [test $is_win32 = ye]s)
-AM_CONDITIONAL([IS_DARWIN], [test $is_darwin = ye]s)
+AM_CONDITIONAL([IS_MINGW], [test $is_mingw = yes])
+AM_CONDITIONAL([IS_WIN32], [test $is_win32 = yes])
+AM_CONDITIONAL([IS_DARWIN], [test $is_darwin = yes])
 AM_CONDITIONAL([BITQ], [test $build_bitq = yes])
 
-AM_CONDITIONAL([MINIDRIVER], [test $build_minidriver = ye]s)
+AM_CONDITIONAL([MINIDRIVER], [test $build_minidriver = yes])
 AM_CONDITIONAL([MINIDRIVER_DUMMY], [test $build_minidriver_dummy = yes])
 
 AM_CONDITIONAL([INTERNAL_JIMTCL], [test $use_internal_jimtcl = yes])