diff --git a/docs/syntax/c4.md b/docs/syntax/c4.md
index e6b7736c3..9e64d4cc0 100644
--- a/docs/syntax/c4.md
+++ b/docs/syntax/c4.md
@@ -320,7 +320,7 @@ UpdateRelStyle(customerA, bankA, $offsetY="60")
     Person(customer, Customer, "A customer of the bank, with personal bank accounts", $tags="v1.0")
 
     Container_Boundary(c1, "Internet Banking") {
-        Container(spa, "Single-Page App", "JavaScript, Angular", "Provides all the Internet banking functionality to cutomers via their web browser")
+        Container(spa, "Single-Page App", "JavaScript, Angular", "Provides all the Internet banking functionality to customers via their web browser")
         Container_Ext(mobile_app, "Mobile App", "C#, Xamarin", "Provides a limited subset of the Internet banking functionality to customers via their mobile device")
         Container(web_app, "Web Application", "Java, Spring MVC", "Delivers the static content and the Internet banking SPA")
         ContainerDb(database, "Database", "SQL Database", "Stores user registration information, hashed auth credentials, access logs, etc.")
@@ -360,7 +360,7 @@ UpdateRelStyle(customerA, bankA, $offsetY="60")
     Person(customer, Customer, "A customer of the bank, with personal bank accounts", $tags="v1.0")
 
     Container_Boundary(c1, "Internet Banking") {
-        Container(spa, "Single-Page App", "JavaScript, Angular", "Provides all the Internet banking functionality to cutomers via their web browser")
+        Container(spa, "Single-Page App", "JavaScript, Angular", "Provides all the Internet banking functionality to customers via their web browser")
         Container_Ext(mobile_app, "Mobile App", "C#, Xamarin", "Provides a limited subset of the Internet banking functionality to customers via their mobile device")
         Container(web_app, "Web Application", "Java, Spring MVC", "Delivers the static content and the Internet banking SPA")
         ContainerDb(database, "Database", "SQL Database", "Stores user registration information, hashed auth credentials, access logs, etc.")
diff --git a/packages/mermaid/src/docs/syntax/c4.md b/packages/mermaid/src/docs/syntax/c4.md
index b6ee5fb79..4f20c5b2c 100644
--- a/packages/mermaid/src/docs/syntax/c4.md
+++ b/packages/mermaid/src/docs/syntax/c4.md
@@ -218,7 +218,7 @@ UpdateRelStyle(customerA, bankA, $offsetY="60")
     Person(customer, Customer, "A customer of the bank, with personal bank accounts", $tags="v1.0")
 
     Container_Boundary(c1, "Internet Banking") {
-        Container(spa, "Single-Page App", "JavaScript, Angular", "Provides all the Internet banking functionality to cutomers via their web browser")
+        Container(spa, "Single-Page App", "JavaScript, Angular", "Provides all the Internet banking functionality to customers via their web browser")
         Container_Ext(mobile_app, "Mobile App", "C#, Xamarin", "Provides a limited subset of the Internet banking functionality to customers via their mobile device")
         Container(web_app, "Web Application", "Java, Spring MVC", "Delivers the static content and the Internet banking SPA")
         ContainerDb(database, "Database", "SQL Database", "Stores user registration information, hashed auth credentials, access logs, etc.")