diff --git a/src/main/java/seedu/address/logic/commands/ModuleDeleteCommand.java b/src/main/java/seedu/address/logic/commands/ModuleDeleteCommand.java
index 807ffaad5d1e..3fcd326b044d 100644
--- a/src/main/java/seedu/address/logic/commands/ModuleDeleteCommand.java
+++ b/src/main/java/seedu/address/logic/commands/ModuleDeleteCommand.java
@@ -7,6 +7,7 @@
 import seedu.address.logic.commands.exceptions.CommandException;
 import seedu.address.model.Model;
 import seedu.address.model.module.Module;
+import seedu.address.model.module.ModuleCode;
 import seedu.address.model.module.ModuleManager;
 
 /**
@@ -24,10 +25,11 @@ public class ModuleDeleteCommand extends Command {
             + PREFIX_MODULE_CODE + "CS2113";
 
     public static final String MESSAGE_DELETE_MODULE_SUCCESS = "Deleted module: %1$s";
+    public static final String MESSAGE_MODULE_NOT_FOUND = "Module with code %s doesn't exist in Trajectory!";
 
-    private final String targetModuleCode;
+    private final ModuleCode targetModuleCode;
 
-    public ModuleDeleteCommand(String moduleCode) {
+    public ModuleDeleteCommand(ModuleCode moduleCode) {
         this.targetModuleCode = moduleCode;
     }
 
@@ -36,7 +38,11 @@ public CommandResult execute(Model model, CommandHistory history) throws Command
         requireNonNull(model);
         ModuleManager moduleManager = ModuleManager.getInstance();
 
-        Module moduleToDelete = moduleManager.getModuleByModuleCode(targetModuleCode);
+        if (!moduleManager.doesModuleExist(targetModuleCode.moduleCode)) {
+            throw new CommandException(String.format(MESSAGE_MODULE_NOT_FOUND, targetModuleCode.moduleCode));
+        }
+
+        Module moduleToDelete = moduleManager.getModuleByModuleCode(targetModuleCode.moduleCode);
         moduleManager.deleteModule(moduleToDelete);
         moduleManager.saveModuleList();
 
diff --git a/src/main/java/seedu/address/logic/parser/ModuleDeleteCommandParser.java b/src/main/java/seedu/address/logic/parser/ModuleDeleteCommandParser.java
index ade875f25679..b2491052bd40 100644
--- a/src/main/java/seedu/address/logic/parser/ModuleDeleteCommandParser.java
+++ b/src/main/java/seedu/address/logic/parser/ModuleDeleteCommandParser.java
@@ -8,6 +8,7 @@
 
 import seedu.address.logic.commands.ModuleDeleteCommand;
 import seedu.address.logic.parser.exceptions.ParseException;
+import seedu.address.model.module.ModuleCode;
 
 /**
  * Parses input arguments and creates a new ModuleDeleteCommand object
@@ -29,7 +30,7 @@ public ModuleDeleteCommand parse(String userInput) throws ParseException {
             throw new ParseException(String.format(MESSAGE_INVALID_COMMAND_FORMAT, ModuleDeleteCommand.MESSAGE_USAGE));
         }
 
-        String moduleCode = argMultimap.getValue(PREFIX_MODULE_CODE).get();
+        ModuleCode moduleCode = ParserUtil.parseModuleCode(argMultimap.getValue(PREFIX_MODULE_CODE).get());
 
         return new ModuleDeleteCommand(moduleCode);
     }