diff --git a/plugins/disk/lvm_ b/plugins/disk/lvm_
index 5d6ceb53..35ac5f36 100755
--- a/plugins/disk/lvm_
+++ b/plugins/disk/lvm_
@@ -45,9 +45,9 @@ munin-node.
 EOF
 
 if [ "$1" = "autoconf" ]; then
-    if ! which lvs 2>/dev/null; then
+    if ! which lvs 2>&1 >/dev/null; then
         echo "no (lvs not found)"
-    elif ! which vgs 2>/dev/null; then
+    elif ! which vgs 2>&1 >/dev/null; then
         echo "no (vgs not found)"
     else
         echo "yes"