diff --git a/ChangeLog b/ChangeLog
index 01469ca8f..31020644e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2010-07-04  Grégoire Sutre  <gregoire.sutre@gmail.com>
+
+	* configure.ac: Avoid == in test command, it's not portable.
+	* util/grub.d/30_os-prober.in: Likewise.
+
 2010-07-04  Colin Watson  <cjwatson@ubuntu.com>
 
 	* kern/emu/getroot.c [__GNU__]: Include <sys/mman.h> for munmap.
diff --git a/configure.ac b/configure.ac
index e5840118c..55c2625cb 100644
--- a/configure.ac
+++ b/configure.ac
@@ -190,7 +190,7 @@ for ext in pcf pcf.gz bdf bdf.gz ttf ttf.gz; do
   done
 done
 
-if test "x$FONT_SOURCE" == x && ( test "x$platform" = xqemu || test "x$platform" = xyeeloong ); then
+if test "x$FONT_SOURCE" = x && ( test "x$platform" = xqemu || test "x$platform" = xyeeloong ); then
    AC_MSG_ERROR([qemu and yeeloong ports need unifont])
 fi
 
diff --git a/util/grub.d/30_os-prober.in b/util/grub.d/30_os-prober.in
index 601663dcc..ecd87bb1c 100644
--- a/util/grub.d/30_os-prober.in
+++ b/util/grub.d/30_os-prober.in
@@ -52,7 +52,7 @@ EOF
              set do_resume=1
            fi
         fi
-        if [ \$do_resume == 0 ]; then
+        if [ \$do_resume = 0 ]; then
            xnu_uuid ${OSXUUID} uuid
            if [ -f /Extra/DSDT.aml ]; then
               acpi -e /Extra/DSDT.aml