diff --git a/src/modules/module-protocol-pulse/module-loopback.c b/src/modules/module-protocol-pulse/module-loopback.c
index b31c3f0fb..194782546 100644
--- a/src/modules/module-protocol-pulse/module-loopback.c
+++ b/src/modules/module-protocol-pulse/module-loopback.c
@@ -258,41 +258,9 @@ static struct module *create_module_loopback(struct impl *impl, const char *argu
 		pw_properties_set(props, "sink", NULL);
 	}
 
-	info.format = SPA_AUDIO_FORMAT_F32P;
-
-	if ((str = pw_properties_get(props, "channels")) != NULL) {
-		info.channels = pw_properties_parse_int(str);
-		pw_properties_set(props, "channels", NULL);
-	} else {
-		info.channels = impl->defs.sample_spec.channels;
-	}
-	if ((str = pw_properties_get(props, "rate")) != NULL) {
-		info.rate = pw_properties_parse_int(str);
-		pw_properties_set(props, "rate", NULL);
-	} else {
-		info.rate = 0;
-	}
-
-	if ((str = pw_properties_get(props, "channel_map")) != NULL) {
-		struct channel_map map;
-
-		channel_map_parse(str, &map);
-		if (info.channels != map.channels)
-			ERROR_RETURN("Mismatched channel map");
-		channel_map_to_positions(&map, info.position);
-		pw_properties_set(props, "channel_map", NULL);
-	} else {
-		if (info.channels == impl->defs.channel_map.channels) {
-			channel_map_to_positions(&impl->defs.channel_map, info.position);
-		} else if (info.channels == 1) {
-			info.position[0] = SPA_AUDIO_CHANNEL_MONO;
-		} else if (info.channels == 2) {
-			info.position[0] = SPA_AUDIO_CHANNEL_FL;
-			info.position[1] = SPA_AUDIO_CHANNEL_FR;
-		} else {
-			ERROR_RETURN("Mismatched channel map");
-		}
-		/* TODO: pull in all of pa_channel_map_init_auto() */
+	if (args_to_audioinfo(impl, props, &info) < 0) {
+		res = -EINVAL;
+		goto out;
 	}
 
 	if ((str = pw_properties_get(props, "source_dont_move")) != NULL) {
diff --git a/src/modules/module-protocol-pulse/module.c b/src/modules/module-protocol-pulse/module.c
index e9dc9d490..012f38a0f 100644
--- a/src/modules/module-protocol-pulse/module.c
+++ b/src/modules/module-protocol-pulse/module.c
@@ -177,6 +177,54 @@ static void add_props(struct pw_properties *props, const char *str)
 	free(s);
 }
 
+static int args_to_audioinfo(struct impl *impl, struct pw_properties *props, struct spa_audio_info_raw *info)
+{
+	const char *str;
+
+	/* We don't use any incoming format setting and use our native format */
+	info->format = SPA_AUDIO_FORMAT_F32P;
+
+	if ((str = pw_properties_get(props, "channels")) != NULL) {
+		info->channels = pw_properties_parse_int(str);
+		pw_properties_set(props, "channels", NULL);
+	} else {
+		info->channels = impl->defs.sample_spec.channels;
+	}
+	if ((str = pw_properties_get(props, "rate")) != NULL) {
+		info->rate = pw_properties_parse_int(str);
+		pw_properties_set(props, "rate", NULL);
+	} else {
+		info->rate = 0;
+	}
+
+	if ((str = pw_properties_get(props, "channel_map")) != NULL) {
+		struct channel_map map;
+
+		channel_map_parse(str, &map);
+		if (info->channels != map.channels) {
+			pw_log_error("Mismatched channel map");
+			return -EINVAL;
+		}
+		channel_map_to_positions(&map, info->position);
+		pw_properties_set(props, "channel_map", NULL);
+	} else {
+		if (info->channels == impl->defs.channel_map.channels) {
+			channel_map_to_positions(&impl->defs.channel_map, info->position);
+		} else if (info->channels == 1) {
+			info->position[0] = SPA_AUDIO_CHANNEL_MONO;
+		} else if (info->channels == 2) {
+			info->position[0] = SPA_AUDIO_CHANNEL_FL;
+			info->position[1] = SPA_AUDIO_CHANNEL_FR;
+		} else {
+			pw_log_error("Mismatched channel map");
+			return -EINVAL;
+		}
+		/* TODO: pull in all of pa_channel_map_init_auto() */
+	}
+
+	return 0;
+}
+
 #include "module-loopback.c"
 #include "module-null-sink.c"
 #include "module-native-protocol-tcp.c"