diff --git a/man/man5/zfs-module-parameters.5 b/man/man5/zfs-module-parameters.5
index 783d3532e..007cb1c71 100644
--- a/man/man5/zfs-module-parameters.5
+++ b/man/man5/zfs-module-parameters.5
@@ -1063,7 +1063,7 @@ Use \fB1\fR for yes (default) and \fB0\fR to disable.
 .RS 12n
 The number of bytes which should be prefetched.
 .sp
-Default value: \fB100\fR.
+Default value: \fB52,428,800\fR.
 .RE
 
 .sp