diff --git a/lib/os.js b/lib/os.js
index c1c4bfa694a06b..991daea13db02a 100644
--- a/lib/os.js
+++ b/lib/os.js
@@ -119,15 +119,15 @@ function loadavg() {
  * logical CPU core.
  *
  * @returns {Array<{
- *  model: string
- *  speed: number
+ *  model: string,
+ *  speed: number,
  *  times: {
- *    user: number
- *    nice: number
- *    sys: number
- *    idle: number
- *    irq: number
- *  }
+ *    user: number,
+ *    nice: number,
+ *    sys: number,
+ *    idle: number,
+ *    irq: number,
+ *  },
  * }>}
  */
 function cpus() {
@@ -246,13 +246,13 @@ function getCIDR(address, netmask, family) {
 
 /**
  * @returns {Record<string, Array<{
- *  address: string
- *  netmask: string
- *  family: 'IPv4' | 'IPv6'
- *  mac: string
- *  internal: boolean
- *  scopeid: number
- *  cidr: string | null
+ *  address: string,
+ *  netmask: string,
+ *  family: 4 | 6,
+ *  mac: string,
+ *  internal: boolean,
+ *  scopeid: number,
+ *  cidr: string | null,
  * }>>}
  */
 function networkInterfaces() {
@@ -329,11 +329,11 @@ function getPriority(pid) {
  * `'buffer'`, the `username`, `shell`, and `homedir` values will
  * be `Buffer` instances.
  * @returns {{
- *   uid: number
- *   gid: number
- *   username: string
- *   homedir: string
- *   shell: string | null
+ *   uid: number,
+ *   gid: number,
+ *   username: string,
+ *   homedir: string,
+ *   shell: string | null,
  * }}
  */
 function userInfo(options) {