diff --git a/Exit-Codes.md b/Exit-Codes.md
index 6a7fd02..7f34cc1 100644
--- a/Exit-Codes.md
+++ b/Exit-Codes.md
@@ -7,4 +7,9 @@ There currently are three exit codes:
 
 **1**:    certificate request failed
 
-**2**:    certificate still valid, request skipped
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+**2**:    certificate still valid, request skipped
+
+## Cronjos
+
+If you run `acme.sh --cron` and all certificates are still valid (so nothing is renewd), the exit code will be is 0.
+Only if you run `acme.sh --renew --domain example.com` and it is still valid, the exit code will be 2 as stated above.
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