diff --git a/gst-libs/gst/mpegts/gst-dvb-section.c b/gst-libs/gst/mpegts/gst-dvb-section.c
index 1feab26e92..ad2b3fb3b8 100644
--- a/gst-libs/gst/mpegts/gst-dvb-section.c
+++ b/gst-libs/gst/mpegts/gst-dvb-section.c
@@ -857,7 +857,7 @@ _parse_sdt (GstMpegTsSection * section)
 
     entry_begin = data;
 
-    if (sdt_info_length + 5 < 4) {
+    if (sdt_info_length - 4 < 5) {
       /* each entry must be at least 5 bytes (+4 bytes for the CRC) */
       GST_WARNING ("PID %d invalid SDT entry size %d",
           section->pid, sdt_info_length);