diff --git a/packages/tools/syslinux/build b/packages/tools/syslinux/build
index 90a35cd4ff..8861fbc229 100755
--- a/packages/tools/syslinux/build
+++ b/packages/tools/syslinux/build
@@ -8,7 +8,7 @@ CFLAGS="$CFLAGS -I`ls -d $ROOT/$BUILD/$1*`/libinstaller"
 CFLAGS="$CFLAGS -I`ls -d $ROOT/$BUILD/$1*`/libfat"
 
 SUBDIRS="codepage core libinstaller mtools"
-[ $TARGET_ARCH = i386 ] && SUBDIRS="$SUBDIRS mbr"
+[ "$TARGET_ARCH" = "i386" ] && SUBDIRS="$SUBDIRS mbr"
 
 cd $PKG_BUILD