diff --git a/scripts/libmakepkg/util/message.sh b/scripts/libmakepkg/util/message.sh
index 15208ef8..c2c1982e 100644
--- a/scripts/libmakepkg/util/message.sh
+++ b/scripts/libmakepkg/util/message.sh
@@ -19,7 +19,7 @@
 #   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 
-[ -n "$LIBMAKEPKG_UTIL_MESSAGE_SH" ] && return
+[[ -n "$LIBMAKEPKG_UTIL_MESSAGE_SH" ]] && return
 LIBMAKEPKG_UTIL_MESSAGE_SH=1
 
 
diff --git a/scripts/libmakepkg/util/option.sh b/scripts/libmakepkg/util/option.sh
index fc649288..1b2d94dc 100644
--- a/scripts/libmakepkg/util/option.sh
+++ b/scripts/libmakepkg/util/option.sh
@@ -18,7 +18,7 @@
 #   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 
-[ -n "$LIBMAKEPKG_UTIL_OPTION_SH" ] && return
+[[ -n "$LIBMAKEPKG_UTIL_OPTION_SH" ]] && return
 LIBMAKEPKG_UTIL_OPTION_SH=1