diff --git a/src/Spectre.Console.Cli.Tests/CommandAppTests.Options.cs b/src/Spectre.Console.Cli.Tests/CommandAppTests.Options.cs
index e8cbbb3..0e8c874 100644
--- a/src/Spectre.Console.Cli.Tests/CommandAppTests.Options.cs
+++ b/src/Spectre.Console.Cli.Tests/CommandAppTests.Options.cs
@@ -21,7 +21,7 @@ public void Should_Throw_If_Required_Option_Is_Missing()
             // Then
             result.ShouldBeOfType<CommandRuntimeException>()
                 .And(ex =>
-                    ex.Message.ShouldBe("Command 'test' is missing required argument 'foo'."));
+                    ex.Message.ShouldBe("Command 'test' is missing required option 'foo'."));
         }
     }
 }
\ No newline at end of file
diff --git a/src/Spectre.Console.Cli/CommandRuntimeException.cs b/src/Spectre.Console.Cli/CommandRuntimeException.cs
index ca94dac..f7c0c4b 100644
--- a/src/Spectre.Console.Cli/CommandRuntimeException.cs
+++ b/src/Spectre.Console.Cli/CommandRuntimeException.cs
@@ -44,7 +44,7 @@ internal static CommandRuntimeException MissingRequiredOption(CommandTree node,
             return new CommandRuntimeException($"Missing required option '{option.GetOptionName()}'.");
         }
 
-        return new CommandRuntimeException($"Command '{node.Command.Name}' is missing required argument '{option.GetOptionName()}'.");
+        return new CommandRuntimeException($"Command '{node.Command.Name}' is missing required option '{option.GetOptionName()}'.");
     }
 
     internal static CommandRuntimeException NoConverterFound(CommandParameter parameter)