Index: clazy.cmake
===================================================================
--- clazy.cmake
+++ clazy.cmake
@@ -42,7 +42,9 @@
 }
 
 PRINFO() {
-  lst=`ls -1 $sharedir/doc/clazy/level*/README*$1* $sharedir/doc/clazy/manuallevel/README*$1*`
+  lst=`ls -1 $sharedir/doc/clazy/level*/README*$1* $sharedir/doc/clazy/manuallevel/README*$1* 2>/dev/null`
+  if ( test ! -z "$lst" )
+  then
     for f in $lst
     do
       l=`echo $f | awk -F/ '{foo=NF-1; printf("    %s:%s\n", $foo,$NF)}'`
@@ -52,6 +54,10 @@
       cat $f
       echo
     done
+  else
+    echo "There is no explanation available for checker \"$1\""
+    echo "Run 'clazy --explain' to see the list of all available checkers."
+  fi
 }
 
 if ( test $# -gt 0 -a "$1" = "--help" )