diff --git a/samples/C4_Deployment Diagram Sample - bigbankplc.puml b/samples/C4_Deployment Diagram Sample - bigbankplc.puml
index 47c946d1..0d93a1a6 100644
--- a/samples/C4_Deployment Diagram Sample - bigbankplc.puml	
+++ b/samples/C4_Deployment Diagram Sample - bigbankplc.puml	
@@ -38,7 +38,7 @@ Deployment_Node(mob, "Customer's mobile device", "Apple IOS or Android"){
     Container(mobile, "Mobile App", "Xamarin", "Provides a limited subset of the Internet Banking functionality to customers via their mobile device.")
 }
 
-Deployment_Node(comp, "Customer's computer", "Mircosoft Windows of Apple macOS"){
+Deployment_Node(comp, "Customer's computer", "Mircosoft Windows or Apple macOS"){
     Deployment_Node(browser, "Web Browser", "Google Chrome, Mozilla Firefox, Apple Safari or Microsoft Edge"){
         Container(spa, "Single Page Application", "JavaScript and Angular", "Provides all of the Internet Banking functionality to customers via their web browser.")
     }