diff --git a/src/main/java/adam/Parser.java b/src/main/java/adam/Parser.java
index caaa3d76a6..7dd707a312 100644
--- a/src/main/java/adam/Parser.java
+++ b/src/main/java/adam/Parser.java
@@ -9,8 +9,6 @@
 import adam.command.MarkCommand;
 import adam.command.UnmarkCommand;
 
-import java.lang.management.ThreadMXBean;
-
 /**
  * Parses the user input and creates the commands requested by the user.
  */
diff --git a/src/test/java/adam/task/DeadlineTest.java b/src/test/java/adam/task/DeadlineTest.java
index 81eea3f15f..3879400273 100644
--- a/src/test/java/adam/task/DeadlineTest.java
+++ b/src/test/java/adam/task/DeadlineTest.java
@@ -20,19 +20,19 @@ public void testDeadlineInvalidDate() {
             Deadline d = new Deadline("description", "not a date");
             fail();
         } catch (Exception e) {
-            assertEquals("ERROR: Invalid date or date format", e.getMessage());
+            assertEquals("ERROR: Invalid date or date format, date format is yyyy-mm-dd", e.getMessage());
         }
         try {
             Deadline d = new Deadline("description", "10 Jan 2001");
             fail();
         } catch (Exception e) {
-            assertEquals("ERROR: Invalid date or date format", e.getMessage());
+            assertEquals("ERROR: Invalid date or date format, date format is yyyy-mm-dd", e.getMessage());
         }
         try {
             Deadline d = new Deadline("description", "2001/01/10");
             fail();
         } catch (Exception e) {
-            assertEquals("ERROR: Invalid date or date format", e.getMessage());
+            assertEquals("ERROR: Invalid date or date format, date format is yyyy-mm-dd", e.getMessage());
         }
     }