diff --git a/subprojects/gst-plugins-good/docs/gst_plugins_cache.json b/subprojects/gst-plugins-good/docs/gst_plugins_cache.json
index 2f0ad6539f..a0ef333b0c 100644
--- a/subprojects/gst-plugins-good/docs/gst_plugins_cache.json
+++ b/subprojects/gst-plugins-good/docs/gst_plugins_cache.json
@@ -13958,7 +13958,7 @@
                         "presence": "always"
                     },
                     "src": {
-                        "caps": "audio/ac3:\n",
+                        "caps": "audio/x-ac3:\n",
                         "direction": "src",
                         "presence": "always"
                     }
diff --git a/subprojects/gst-plugins-good/gst/rtp/gstrtpac3depay.c b/subprojects/gst-plugins-good/gst/rtp/gstrtpac3depay.c
index 68c23e2768..5bb607bdc4 100644
--- a/subprojects/gst-plugins-good/gst/rtp/gstrtpac3depay.c
+++ b/subprojects/gst-plugins-good/gst/rtp/gstrtpac3depay.c
@@ -52,7 +52,7 @@ static GstStaticPadTemplate gst_rtp_ac3_depay_src_template =
 GST_STATIC_PAD_TEMPLATE ("src",
     GST_PAD_SRC,
     GST_PAD_ALWAYS,
-    GST_STATIC_CAPS ("audio/ac3")
+    GST_STATIC_CAPS ("audio/x-ac3")
     );
 
 static GstStaticPadTemplate gst_rtp_ac3_depay_sink_template =
@@ -120,7 +120,7 @@ gst_rtp_ac3_depay_setcaps (GstRTPBaseDepayload * depayload, GstCaps * caps)
     clock_rate = 90000;         /* default */
   depayload->clock_rate = clock_rate;
 
-  srccaps = gst_caps_new_empty_simple ("audio/ac3");
+  srccaps = gst_caps_new_empty_simple ("audio/x-ac3");
   res = gst_pad_set_caps (depayload->srcpad, srccaps);
   gst_caps_unref (srccaps);