diff --git a/man2/membarrier.2 b/man2/membarrier.2
index b3a94f95f..81d573dd5 100644
--- a/man2/membarrier.2
+++ b/man2/membarrier.2
@@ -92,16 +92,18 @@ All threads on the system are targeted by this command.
 Execute a memory barrier on all running threads of all processes that
 previously registered with
 .BR MEMBARRIER_CMD_REGISTER_GLOBAL_EXPEDITED .
-Upon return from the system call, the calling thread is ensured that all
+Upon return from the system call, the calling thread has a guarantee that all
 running threads have passed through a state where all memory accesses to
 user-space addresses match program order between entry to and return
 from the system call (non-running threads are de facto in such a state).
-This covers only threads from processes which registered with
+This guarantee is provided only for the threads of processes that
+previously registered with
 .BR MEMBARRIER_CMD_REGISTER_GLOBAL_EXPEDITED .
 Given that registration is about the intent to receive the barriers, it
 is valid to invoke
 .BR MEMBARRIER_CMD_GLOBAL_EXPEDITED
-from a non-registered process.
+from a process that has not employed
+.BR MEMBARRIER_CMD_REGISTER_GLOBAL_EXPEDITED .
 .IP
 The "expedited" commands complete faster than the non-expedited ones;
 they never block, but have the downside of causing extra overhead.
@@ -113,17 +115,18 @@ memory barriers.
 .TP
 .BR MEMBARRIER_CMD_PRIVATE_EXPEDITED " (since Linux 4.14)"
 Execute a memory barrier on each running thread belonging to the same
-process as the current thread.
-Upon return from system call, the calling
-thread is assured that all its running threads siblings have passed
+process as the calling thread.
+Upon return from the system call, the calling
+thread has a guarantee that all its running thread siblings have passed
 through a state where all memory accesses to user-space addresses match
 program order between entry to and return from the system call
 (non-running threads are de facto in such a state).
-This covers only threads from the same process as the calling thread.
+This guarantee is provided only for threads in
+the same process as the calling thread.
 .IP
 The "expedited" commands complete faster than the non-expedited ones;
 they never block, but have the downside of causing extra overhead.
-A process needs to register its intent to use the private
+A process must register its intent to use the private
 expedited command prior to using it.
 .TP
 .BR MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED " (since Linux 4.14)"
@@ -133,12 +136,13 @@ Register the process's intent to use
 .BR MEMBARRIER_CMD_PRIVATE_EXPEDITED_SYNC_CORE " (since Linux 4.16)"
 In addition to providing the memory ordering guarantees described in
 .BR MEMBARRIER_CMD_PRIVATE_EXPEDITED ,
-ensure the calling thread, upon return from system call, that all its
-running threads siblings have executed a core serializing instruction.
-This only covers threads from the same process as the calling thread.
+upon return from system call the calling thread has a guarantee that all its
+running thread siblings have executed a core serializing instruction.
+This guarantee is provided only for threads in
+the same process as the calling thread.
 The "expedited" commands complete faster than the non-expedited ones,
 they never block, but have the downside of causing extra overhead.
-A process needs to register its intent to use the private expedited sync
+A process must register its intent to use the private expedited sync
 core command prior to using it.
 .TP
 .BR MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED_SYNC_CORE " (since Linux 4.16)"