1 files changed, 11 insertions, 1 deletions

diff --git a/lib/Nagios/Plugin/Performance.pm b/lib/Nagios/Plugin/Performance.pm
index df591fb..c35653e 100644
--- a/lib/Nagios/Plugin/Performance.pm
+++ b/lib/Nagios/Plugin/Performance.pm
@@ -35,8 +35,18 @@ sub _parse {
         my @info = ($1, $2, $3, $4, $5, $6, $7);
         # We convert any commas to periods, in the value fields
         map { defined $info[$_] && $info[$_] =~ s/,/./go } (1, 3, 4, 5, 6);
+
+        # Check that $info[1] is an actual value
+        # We do this by returning undef if a warning appears
+        my $performance_value;
+        {
+                my $not_value;
+                local $SIG{__WARN__} = sub { $not_value++ };
+                $performance_value = $info[1]+0;
+                return undef if $not_value;
+        }
     my $p = $class->new(
-        label => $info[0], value => $info[1]+0, uom => $info[2], warning => $info[3], critical => $info[4], 
+        label => $info[0], value => $performance_value, uom => $info[2], warning => $info[3], critical => $info[4], 
         min => $info[5], max => $info[6]
     );
         return $p;