diff --git a/unit06_trust_dig_cert/lab/README.MD b/unit06_trust_dig_cert/lab/README.MD
index a238872..5bdaf1e 100644
--- a/unit06_trust_dig_cert/lab/README.MD
+++ b/unit06_trust_dig_cert/lab/README.MD
@@ -21,7 +21,7 @@ Open up Certificate 1 and identify the following:
 * Name:
 * Issuer:
 * What is CN used for:
-* What is ON used for:
+* What is OU used for:
 * What is O used for:
 * What is L used for: