diff --git a/net/net_freebsd.go b/net/net_freebsd.go
index 6dc7a23d5c876a11caa73498ec27d26373a425a7..d6882f153fad6b8fc3572c76288f5b6fb2c66d1c 100644
--- a/net/net_freebsd.go
+++ b/net/net_freebsd.go
@@ -32,6 +32,9 @@ func NetIOCounters(pernic bool) ([]NetIOCountersStat, error) {
 		}
 		exists = append(exists, values[0])
 
+		if len(values) < 12 {
+			continue
+		}
 		base := 1
 		// sometimes Address is ommitted
 		if len(values) < 13 {