diff --git a/doc/api/os.md b/doc/api/os.md
index 774cfcd85a31aa..2bacf17933f0d0 100644
--- a/doc/api/os.md
+++ b/doc/api/os.md
@@ -142,7 +142,7 @@ The properties included on each object include:
 `nice` values are POSIX-only. On Windows, the `nice` values of all processors
 are always 0.
 
-On Linux and Android when `/proc` file system is not accessible, an empty
+On Linux and Android, when `/proc` is not accessible, an empty
 array will be returned.
 
 `os.cpus().length` should not be used to calculate the amount of parallelism