diff --git a/subprojects/gst-plugins-bad/ext/soundtouch/gstpitch.cc b/subprojects/gst-plugins-bad/ext/soundtouch/gstpitch.cc
index d0485f6d23..95205f75c0 100644
--- a/subprojects/gst-plugins-bad/ext/soundtouch/gstpitch.cc
+++ b/subprojects/gst-plugins-bad/ext/soundtouch/gstpitch.cc
@@ -79,7 +79,7 @@ enum
     "audio/x-raw, " \
       "format = (string) " GST_AUDIO_NE (S16) ", " \
       "rate = (int) [ 8000, MAX ], " \
-      "channels = (int) [ 1, MAX ]", \
+      "channels = (int) [ 1, MAX ], " \
       "layout = (string) interleaved"
 #else
 #error "Only integer or float samples are supported"