diff --git a/init.d/fsck.in b/init.d/fsck.in
index 52a3467b..66e58931 100644
--- a/init.d/fsck.in
+++ b/init.d/fsck.in
@@ -51,7 +51,7 @@ _on_ac_power()
 			"connected:"*"OFF") return 128;;
 			esac
 		done
-	elif sysctl -q hw.acpi.acline >/dev/null; then
+	elif sysctl -q hw.acpi.acline >/dev/null 2>/dev/null; then
 		case $(sysctl -n hw.acpi.acline) in
 		0) return 1;;
 		*) return 0;;