diff --git a/aplay/aplay.1 b/aplay/aplay.1
index 2945dadc6..72365cbce 100644
--- a/aplay/aplay.1
+++ b/aplay/aplay.1
@@ -75,10 +75,14 @@ Valid values are 2000 through 192000 Hertz.
 \fI\-d, \-\-duration=#\fP
 Interrupt after # seconds.
 A value of zero means infinity.
-The default is zero, so if this option is omitted then the arecord process will run until it is killed.
+The default is zero, so if this option is omitted then the record/playback process will run until it is killed.
+Either '-d' or '-s' option is available exclusively.
 .TP
-\fI\-s, \-\-sleep\-min=#\fP
-Min ticks to sleep. The default is not to sleep.
+\fI\-s, \-\-samples=#\fP
+Interrupt after tranmission of # PCM frames.
+A value of zero means infinity.
+The default is zero, so if this options is omitted then the record/playback process will run until it is killed.
+Either '-d' or '-s' option is available exclusively.
 .TP
 \fI\-M, \-\-mmap\fP            
 Use memory\-mapped (mmap) I/O mode for the audio stream.