diff --git a/README.md b/README.md
index 78cb6f2..79f2ed4 100644
--- a/README.md
+++ b/README.md
@@ -239,7 +239,7 @@ smbclient -L {TARGET_IP}
 smbclient -N \\\\{TARGET_IP}\\{SHARE} 
 
 # Authenticate with Administrator 
-smbclient -N \\\\{TARGET_IP}\\{SHARE} -u Administrator
+smbclient -N \\\\{TARGET_IP}\\{SHARE} -U Administrator
 ```
 
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