diff --git a/plugin-dir/check_rhev3.pl b/plugin-dir/check_rhev3.pl
index 6c5133e..c8dfac0 100755
--- a/plugin-dir/check_rhev3.pl
+++ b/plugin-dir/check_rhev3.pl
@@ -1464,14 +1464,15 @@ sub check_nic_errors{
       print "Interface errors in file $cookie/$host/$nic not a number: $errors\n";
       exit $ERRORS{$status{'unknown'}};
     }
+
     $return = $error - $errors;
     # set counter to 0 if value is negative
     # this can happen if counter is reseted on host (e.g. reboot)
     $return = 0 if $return < 0;
-    write_errors_file($cookie . "/" . $host . "/" . $nic, $return);
+    write_errors_file($cookie . "/" . $host . "/" . $nic, $error);
   }else{
     $return = $error;
-    write_errors_file($cookie . "/" . $host . "/" . $nic, $return);
+    write_errors_file($cookie . "/" . $host . "/" . $nic, $error);
   }
   
   return $return;
@@ -1805,4 +1806,3 @@ sub rest_api_connect{
 }
 
 exit $ERRORS{$status{'unknown'}};
-