diff --git a/en_US.ISO8859-1/books/faq/book.sgml b/en_US.ISO8859-1/books/faq/book.sgml
index c464be194f..d2a24e9f10 100644
--- a/en_US.ISO8859-1/books/faq/book.sgml
+++ b/en_US.ISO8859-1/books/faq/book.sgml
@@ -4008,10 +4008,10 @@ kern.timecounter.hardware: TSC -&gt; i8254</screen>
 
         <answer>
           <para>This means that a function that may sleep was called while
-              holding a mutex (or other unsleepable) lock held.</para>
+              a mutex (or other unsleepable) lock was held.</para>
 
           <para>The reason this is an error is because mutexes are not
-              intended to be held for long periods of time as they are
+              intended to be held for long periods of time; they are
               supposed to only be held to maintain short periods of
               synchronization.  This programming contract allows device
               drivers to use mutexes to synchronize with the rest of the kernel
@@ -4019,7 +4019,7 @@ kern.timecounter.hardware: TSC -&gt; i8254</screen>
               Hence it is imperative that no subsystem in the kernel
               block for an extended period while holding a mutex.</para>
 
-          <para>To catch such errors assertions may be added to the kernel
+          <para>To catch such errors, assertions may be added to the kernel
               that interact with the witness subsystem to emit a warning
               or fatal error (depending on the system configuration) when
               a potentially blocking call is made while holding a mutex.</para>