diff --git a/lib/libc/x86/sys/pkru.3 b/lib/libc/x86/sys/pkru.3
index 1785f93cf4b6..2bcb6a64baaa 100644
--- a/lib/libc/x86/sys/pkru.3
+++ b/lib/libc/x86/sys/pkru.3
@@ -106,7 +106,7 @@ and having length
 .Fa len .
 Starting address is truncated to the page start,
 and the end is rounded up to the end of the page.
-After a successfull call, the range has the specified key assigned,
+After a successful call, the range has the specified key assigned,
 even if the key is zero and it did not change the page table entries.
 .Pp
 The