diff --git a/net/net_aix_cgo.go b/net/net_aix_cgo.go
index a45a5b7..c440051 100644
--- a/net/net_aix_cgo.go
+++ b/net/net_aix_cgo.go
@@ -30,7 +30,7 @@ func IOCountersWithContext(ctx context.Context, pernic bool) ([]IOCountersStat,
 		iocounters = append(iocounters, n)
 	}
 	if pernic == false {
-		return getIOCountersAll(iocounters)
+		return getIOCountersAll(iocounters), nil
 	}
 	return iocounters, nil
 }
diff --git a/net/net_aix_nocgo.go b/net/net_aix_nocgo.go
index f63a21e..2f4172a 100644
--- a/net/net_aix_nocgo.go
+++ b/net/net_aix_nocgo.go
@@ -89,7 +89,7 @@ func IOCountersWithContext(ctx context.Context, pernic bool) ([]IOCountersStat,
 		return nil, err
 	}
 	if pernic == false {
-		return getIOCountersAll(iocounters)
+		return getIOCountersAll(iocounters), nil
 	}
 	return iocounters, nil
 }