diff --git a/components/fatfs/port/freertos/ffsystem.c b/components/fatfs/port/freertos/ffsystem.c
index 5e5a068da72..4a6e0140d8a 100644
--- a/components/fatfs/port/freertos/ffsystem.c
+++ b/components/fatfs/port/freertos/ffsystem.c
@@ -122,7 +122,7 @@ int ff_mutex_create (	/* Returns 1:Function succeeded or 0:Could not create the
 /  semaphore of the volume created with ff_mutex_create function.
 */
 
-void ff_mutex_delete (	/* Returns 1:Function succeeded or 0:Could not delete due to an error */
+void ff_mutex_delete (
 	int vol				/* Mutex ID: Volume mutex (0 to FF_VOLUMES - 1) or system mutex (FF_VOLUMES) */
 )
 {