diff --git a/lib/redis.pm b/lib/redis.pm
index 80f6a57..586c9f2 100644
--- a/lib/redis.pm
+++ b/lib/redis.pm
@@ -479,9 +479,11 @@ sub redis_cgi {
 		}
 
 		my (undef, undef, undef, $data) = RRDs::fetch("$rrd",
+			"--resolution=60",
 			"--start=-1min",
-			"AVERAGE",
-			"-r 60");
+			"AVERAGE");
+		$err = RRDs::error;
+		push(@output, "ERROR: while fetching $rrd: $err\n") if $err;
 		my $line = @$data[0];
 		my ($uptime) = @$line[$e * 28];
 		my $uptimeline;