diff --git a/sys/rpicamsrc/gstrpicamsrc.c b/sys/rpicamsrc/gstrpicamsrc.c
index e8e3b7a21a..e5cb5afb21 100644
--- a/sys/rpicamsrc/gstrpicamsrc.c
+++ b/sys/rpicamsrc/gstrpicamsrc.c
@@ -184,7 +184,7 @@ enum
   "height = " GST_VIDEO_SIZE_RANGE ", "         \
   "framerate = " GST_VIDEO_FPS_RANGE ", "       \
   "stream-format = (string) byte-stream, "  \
-  "alignment = (string) au, "               \
+  "alignment = (string) nal, "               \
   "profile = (string) { baseline, main, high }"
 
 static GstStaticPadTemplate video_src_template = GST_STATIC_PAD_TEMPLATE ("src",