diff --git a/doc/api/os.markdown b/doc/api/os.markdown
index fac97d391b2..3ef0d9282d7 100644
--- a/doc/api/os.markdown
+++ b/doc/api/os.markdown
@@ -52,7 +52,9 @@ Returns the amount of free system memory in bytes.
 
 ## os.cpus()
 
-Returns an array of objects containing information about each CPU/core installed: model, speed (in MHz), and times (an object containing the number of CPU ticks spent in: user, nice, sys, idle, and irq).
+Returns an array of objects containing information about each CPU/core
+installed: model, speed (in MHz), and times (an object containing the number of
+milliseconds the CPU/core spent in: user, nice, sys, idle, and irq).
 
 Example inspection of os.cpus: