diff --git a/libavformat/mpegtsenc.c b/libavformat/mpegtsenc.c
index a1bd14ccb0..b1bccd1a8b 100644
--- a/libavformat/mpegtsenc.c
+++ b/libavformat/mpegtsenc.c
@@ -396,7 +396,7 @@ static MpegTSService *mpegts_add_service(MpegTSWrite *ts,
     service = av_mallocz(sizeof(MpegTSService));
     if (!service)
         return NULL;
-    service->pmt.pid = ts->pmt_start_pid + ts->nb_services;
+    service->pmt.pid = ts->pmt_start_pid + ts->nb_services - 1;
     service->sid = sid;
     service->provider_name = av_strdup(provider_name);
     service->name = av_strdup(name);