diff --git a/src/modules/module-ffado-driver.c b/src/modules/module-ffado-driver.c
index 2cee46c36..4f7237271 100644
--- a/src/modules/module-ffado-driver.c
+++ b/src/modules/module-ffado-driver.c
@@ -39,7 +39,7 @@
  * ## Module Options
  *
  * - `driver.mode`: the driver mode, sink|source|duplex, default duplex
- * - `ffado.devices`: array of devices to open, default hw:0
+ * - `ffado.devices`: array of devices to open, default "hw:0"
  * - `ffado.period-size`: period size,default 1024
  * - `ffado.period-num`: period number,default 3
  * - `ffado.sample-rate`: sample-rate, default 48000
@@ -71,7 +71,7 @@
  * {   name = libpipewire-module-ffado-driver
  *     args = {
  *         #driver.mode       = duplex
- *         #ffado.devices     = [ hw:0 ]
+ *         #ffado.devices     = [ "hw:0" ]
  *         #ffado.period-size = 1024
  *         #ffado.period-num  = 3
  *         #ffado.sample-rate = 48000
@@ -100,7 +100,7 @@ PW_LOG_TOPIC_STATIC(mod_topic, "mod." NAME);
 
 #define MAX_PORTS	128
 
-#define DEFAULT_DEVICES		"[ hw:0 ]"
+#define DEFAULT_DEVICES		"[ \"hw:0\" ]"
 #define DEFAULT_PERIOD_SIZE	1024
 #define DEFAULT_PERIOD_NUM	3
 #define DEFAULT_SAMPLE_RATE	48000
@@ -113,7 +113,7 @@ PW_LOG_TOPIC_STATIC(mod_topic, "mod." NAME);
 
 #define MODULE_USAGE	"( remote.name=<remote> ) "				\
 			"( driver.mode=<sink|source|duplex> ) "			\
-			"( ffado.devices=<devices array size, default hw:0> ) "	\
+			"( ffado.devices=<devices array size, default \"hw:0\"> ) "	\
 			"( ffado.period-size=<period size, default 1024> ) "	\
 			"( ffado.period-num=<period num, default 3> ) "		\
 			"( ffado.sample-rate=<sampe rate, default 48000> ) "	\