diff --git a/plugins/openvz/openvz_ b/plugins/openvz/openvz_
index a3223842..4291a4bd 100755
--- a/plugins/openvz/openvz_
+++ b/plugins/openvz/openvz_
@@ -19,7 +19,11 @@ ATTRIBUTE=`basename $0 | sed 's/^openvz_//g'`
 
 
 if [ "$1" = "autoconf" ]; then
-        echo yes
+        if which vzlist >/dev/null; then
+                echo yes
+        else
+                echo "no (missing 'vzlist' executable)"
+        fi
         exit 0
 fi
 
@@ -45,4 +49,3 @@ vzlist -a -H --no-trim -o hostname,$ATTRIBUTE | filter | awk '{gsub(/\./,"_",$1)
          print("'$ATTRIBUTE'"$1".value "$2)}'
 
 exit 0
-