--- a/check_nfsmounts/check_nfsmounts
+++ b/check_nfsmounts/check_nfsmounts
@@ -163,7 +163,7 @@
 }
 my $avgage=$agetot/$x;
 
-my $perfdata=sprintf("maxtime=%9.7f;avgtime=%9.7f;mountpoints=$x",$maxage,$avgage);
+my $perfdata=sprintf(" maxtime=%9.7f;avgtime=%9.7f;mountpoints=$x",$maxage,$avgage);
 
 if(@warnings) {
   print "NFS WARNING: @warnings|$perfdata\n";
