diff --git a/src/main/java/seedu/address/logic/commands/ClusterCommand.java b/src/main/java/seedu/address/logic/commands/ClusterCommand.java
index fb768844a21..6e50c5b5f2a 100644
--- a/src/main/java/seedu/address/logic/commands/ClusterCommand.java
+++ b/src/main/java/seedu/address/logic/commands/ClusterCommand.java
@@ -3,10 +3,6 @@
 import static java.util.Objects.requireNonNull;
 import static seedu.address.logic.parser.CliSyntax.PREFIX_ADDRESS;
 import static seedu.address.logic.parser.CliSyntax.PREFIX_DIAGNOSIS;
-import static seedu.address.logic.parser.CliSyntax.PREFIX_EMAIL;
-import static seedu.address.logic.parser.CliSyntax.PREFIX_NAME;
-import static seedu.address.logic.parser.CliSyntax.PREFIX_PHONE;
-import static seedu.address.logic.parser.CliSyntax.PREFIX_TAG;
 
 import seedu.address.commons.util.ToStringBuilder;
 import seedu.address.logic.commands.exceptions.CommandException;
diff --git a/src/main/java/seedu/address/logic/commands/ReadCommand.java b/src/main/java/seedu/address/logic/commands/ReadCommand.java
index f3c7f5da698..5b3a2cb1d4b 100644
--- a/src/main/java/seedu/address/logic/commands/ReadCommand.java
+++ b/src/main/java/seedu/address/logic/commands/ReadCommand.java
@@ -1,7 +1,6 @@
 package seedu.address.logic.commands;
 
 import static java.util.Objects.requireNonNull;
-import static seedu.address.logic.parser.CliSyntax.PREFIX_NRIC;
 import static seedu.address.model.Model.PREDICATE_SHOW_ALL_PERSONS;
 
 import seedu.address.commons.util.ToStringBuilder;
diff --git a/src/main/java/seedu/address/logic/parser/FindCommandParser.java b/src/main/java/seedu/address/logic/parser/FindCommandParser.java
index c56d9c1fb6e..06c201772d6 100644
--- a/src/main/java/seedu/address/logic/parser/FindCommandParser.java
+++ b/src/main/java/seedu/address/logic/parser/FindCommandParser.java
@@ -37,7 +37,7 @@ public FindCommand parse(String args) throws ParseException {
             return new FindCommand(new NameContainsKeywordsPredicate(list));
         } else if (trimmedArgs.startsWith(PREFIX_ADDRESS.getPrefix())) {
             String[] addressKeywords = trimmedArgs.substring(2).trim().split(",");
-            int len  = addressKeywords.length;
+            int len = addressKeywords.length;
             for (int i = 0; i < len; i++) {
                 addressKeywords[i] = addressKeywords[i].trim();
             }
@@ -45,7 +45,7 @@ public FindCommand parse(String args) throws ParseException {
             return new FindCommand(new AddressContainsKeywordsPredicate(list));
         } else if (trimmedArgs.startsWith(PREFIX_CONDITION.getPrefix())) {
             String[] conditionKeywords = trimmedArgs.substring(4).trim().split(",");
-            int len  = conditionKeywords.length;
+            int len = conditionKeywords.length;
             for (int i = 0; i < len; i++) {
                 conditionKeywords[i] = conditionKeywords[i].trim();
             }