diff --git a/spa/plugins/bluez5/a2dp-codec-aac.c b/spa/plugins/bluez5/a2dp-codec-aac.c
index 5e409d2f7..6ebcf6707 100644
--- a/spa/plugins/bluez5/a2dp-codec-aac.c
+++ b/spa/plugins/bluez5/a2dp-codec-aac.c
@@ -239,6 +239,50 @@ static int codec_enum_config(const struct a2dp_codec *codec,
 	return *param == NULL ? -EIO : 1;
 }
 
+static int codec_validate_config(const struct a2dp_codec *codec, uint32_t flags,
+			const void *caps, size_t caps_size,
+			struct spa_audio_info *info)
+{
+	a2dp_aac_t conf;
+	size_t j;
+
+	if (caps == NULL || caps_size < sizeof(conf))
+		return -EINVAL;
+
+	memcpy(&conf, caps, sizeof(conf));
+
+	spa_zero(*info);
+	info->media_type = SPA_MEDIA_TYPE_audio;
+	info->media_subtype = SPA_MEDIA_SUBTYPE_raw;
+	info->info.raw.format = SPA_AUDIO_FORMAT_S16;
+
+	if (conf.object_type != AAC_OBJECT_TYPE_MPEG2_AAC_LC &&
+			conf.object_type != AAC_OBJECT_TYPE_MPEG4_AAC_LC)
+		return -EINVAL;
+
+	for (j = 0; j < SPA_N_ELEMENTS(aac_frequencies); ++j) {
+		if (AAC_GET_FREQUENCY(conf) & aac_frequencies[j].config) {
+			info->info.raw.rate = aac_frequencies[j].value;
+			break;
+		}
+	}
+	if (j == SPA_N_ELEMENTS(aac_frequencies))
+		return -EINVAL;
+
+	if (conf.channels & AAC_CHANNELS_2) {
+		info->info.raw.channels = 2;
+		info->info.raw.position[0] = SPA_AUDIO_CHANNEL_FL;
+		info->info.raw.position[1] = SPA_AUDIO_CHANNEL_FR;
+	} else if (conf.channels & AAC_CHANNELS_1) {
+		info->info.raw.channels = 1;
+		info->info.raw.position[0] = SPA_AUDIO_CHANNEL_MONO;
+	} else {
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
 static void *codec_init_props(const struct a2dp_codec *codec, const struct spa_dict *settings)
 {
 	struct props *p = calloc(1, sizeof(struct props));
@@ -495,6 +539,7 @@ const struct a2dp_codec a2dp_codec_aac = {
 	.fill_caps = codec_fill_caps,
 	.select_config = codec_select_config,
 	.enum_config = codec_enum_config,
+	.validate_config = codec_validate_config,
 	.init_props = codec_init_props,
 	.clear_props = codec_clear_props,
 	.init = codec_init,