diff --git a/plugins/inputs/ping/ping.go b/plugins/inputs/ping/ping.go
index 53c109d75..1d49cccc4 100644
--- a/plugins/inputs/ping/ping.go
+++ b/plugins/inputs/ping/ping.go
@@ -206,7 +206,7 @@ func (p *Ping) args(url string, system string) []string {
 		case "darwin":
 			args = append(args, "-W", strconv.FormatFloat(p.Timeout*1000, 'f', -1, 64))
 		case "freebsd", "netbsd", "openbsd":
-			args = append(args, "-w", strconv.FormatFloat(p.Timeout*1000, 'f', -1, 64))
+			args = append(args, "-W", strconv.FormatFloat(p.Timeout*1000, 'f', -1, 64))
 		case "linux":
 			args = append(args, "-W", strconv.FormatFloat(p.Timeout, 'f', -1, 64))
 		default: