diff --git a/modules/proc_use-quay-tags.adoc b/modules/proc_use-quay-tags.adoc
index a814e2af0..eda0f5e69 100644
--- a/modules/proc_use-quay-tags.adoc
+++ b/modules/proc_use-quay-tags.adoc
@@ -121,7 +121,9 @@ image:tag-expires-ui.png[Change tag expiration under the Options icon or from th
 
 Adding a label like `quay.expires-after=20h` via the Dockerfile LABEL command will cause a tag to automatically expire
 after the time indicated.
-The time values could be something like `1h`, `2d`, `3w` for hours, days, and weeks, respectively, from the time the image is built.
+The time values could be something like `1h`, `2d`, `3w`. Expiration time is
+calculated from the time the image is built and the suffix can be 's' for
+seconds, 'm' for minutes, 'h' for hours, 'd' for days and 'w' for weeks.
 
 === Setting tag expiration from the repository