diff --git a/gst/audioconvert/gstaudioconvert.c b/gst/audioconvert/gstaudioconvert.c
index dcb139d501..f23e3ab211 100644
--- a/gst/audioconvert/gstaudioconvert.c
+++ b/gst/audioconvert/gstaudioconvert.c
@@ -116,7 +116,8 @@ G_DEFINE_TYPE_WITH_CODE (GstAudioConvert, gst_audio_convert,
 /*** GSTREAMER PROTOTYPES *****************************************************/
 
 #define STATIC_CAPS \
-GST_STATIC_CAPS (GST_AUDIO_CAPS_MAKE (GST_AUDIO_FORMATS_ALL))
+GST_STATIC_CAPS (GST_AUDIO_CAPS_MAKE (GST_AUDIO_FORMATS_ALL) \
+    ", layout = (string) interleaved")
 
 static GstStaticPadTemplate gst_audio_convert_src_template =
 GST_STATIC_PAD_TEMPLATE ("src",
diff --git a/gst/audioresample/gstaudioresample.c b/gst/audioresample/gstaudioresample.c
index a74acc436e..0e04371f5b 100644
--- a/gst/audioresample/gstaudioresample.c
+++ b/gst/audioresample/gstaudioresample.c
@@ -67,10 +67,12 @@ enum
 
 #if G_BYTE_ORDER == G_LITTLE_ENDIAN
 #define SUPPORTED_CAPS \
-  GST_AUDIO_CAPS_MAKE ("{ F32LE, F64LE, S32LE, S24LE, S16LE, S8 }")
+  GST_AUDIO_CAPS_MAKE ("{ F32LE, F64LE, S32LE, S24LE, S16LE, S8 }") \
+  ", layout = (string) { interleaved, non-interleaved }"
 #else
 #define SUPPORTED_CAPS \
-  GST_AUDIO_CAPS_MAKE ("{ F32BE, F64BE, S32BE, S24BE, S16BE, S8 }")
+  GST_AUDIO_CAPS_MAKE ("{ F32BE, F64BE, S32BE, S24BE, S16BE, S8 }") \
+  ", layout = (string) { interleaved, non-interleaved }"
 #endif
 
 /* If TRUE integer arithmetic resampling is faster and will be used if appropriate */
diff --git a/gst/audiotestsrc/gstaudiotestsrc.c b/gst/audiotestsrc/gstaudiotestsrc.c
index 6a59884073..2a5a4747f1 100644
--- a/gst/audiotestsrc/gstaudiotestsrc.c
+++ b/gst/audiotestsrc/gstaudiotestsrc.c
@@ -89,6 +89,7 @@ GST_STATIC_PAD_TEMPLATE ("src",
     GST_PAD_ALWAYS,
     GST_STATIC_CAPS ("audio/x-raw, "
         "format = (string) " FORMAT_STR ", "
+        "layout = (string) interleaved, "
         "rate = (int) [ 1, MAX ], " "channels = (int) [ 1, 2 ]")
     );