diff --git a/README.md b/README.md
index 3bb621627a67bd4e60f0dbdfa82dc997c9f610a9..ce8ea64f97e321648b16c567fa62cb894de70ae3 100644
--- a/README.md
+++ b/README.md
@@ -37,6 +37,12 @@ Please follow the following general instructions for collecting SystemReady ES o
         /uefi_dump
 ```
 
+When certifying with the recommended Security Interface Extension (SIE), the ACS test results will include the SIE folder:
+
+```
+    /acs_results
+        /SIE
+```
 
 ### `./manual-results/`
 - Optionally place any results from manually performed tests in this folder.