diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
index df597b8..153ddcd 100644
--- a/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@ -4743,9 +4743,9 @@
         return NULL;
 
     /*
-    ** sched_setscheduler() returns 0 in Linux, but
-    ** the previous scheduling policy.
-    ** On error, -1 is returned in all Operative Systems.
+    ** sched_setscheduler() returns 0 in Linux, but the previous
+    ** scheduling policy under Solaris/Illumos, and others.
+    ** On error, -1 is returned in all Operating Systems.
     */
     if (sched_setscheduler(pid, policy, &param) == -1)
         return posix_error();