diff --git a/docs/DeveloperGuide.md b/docs/DeveloperGuide.md
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@@ -119,7 +119,7 @@ The `Parser` component is responsible for interpreting the user's input and retu
Below is the sequence diagram of a parser which shows how `Parser` parses user input:
-![Parser Parsing User Input Sequence Diagram](images/sequence/Parser.png)
+![Parser Parsing User Input Sequence Diagram](images/sequence/Parser_execute_command.svg)
*Figure 5: Parser Parsing User Input Sequence Diagram*
When user input a string to `Main`, it passes the full user input to `Parser` via `parseCommand`. In `parseCommand`, it finds the matching keyword for different command from the user input, it calls the respective `prepareCommand` method within itself. `prepareCommand` then generates the corresponding command class and return it to `parseCommand`, which returns the `Command` back to `Main` for execution.
diff --git a/docs/images/sequence/Parser_execute_command.svg b/docs/images/sequence/Parser_execute_command.svg
new file mode 100644
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@@ -0,0 +1 @@
+
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