diff --git a/clean-code-challanges/src/main/java/IsogramChecker.java b/clean-code-challanges/src/main/java/IsogramChecker.java
index 00d4c74..bbe0b59 100644
--- a/clean-code-challanges/src/main/java/IsogramChecker.java
+++ b/clean-code-challanges/src/main/java/IsogramChecker.java
@@ -1,3 +1,5 @@
+import java.util.*;
+
 /**
  * Determine if a word or phrase is an isogram.
  *
@@ -16,7 +18,9 @@
 class IsogramChecker {
 
   boolean isIsogram(String phrase) {
-    throw new UnsupportedOperationException("Delete this statement and write your own implementation.");
+    phrase = phrase.replaceAll("[\\s\\-]", "").toLowerCase();
+    Set<Character> charSet = new LinkedHashSet<>();
+    phrase.chars().forEach(e -> charSet.add((char) e));
+    return phrase.toCharArray().length == charSet.size();
   }
-
 }
diff --git a/clean-code-challanges/src/test/java/IsogramCheckerTest.java b/clean-code-challanges/src/test/java/IsogramCheckerTest.java
index e6808f9..188d4fd 100644
--- a/clean-code-challanges/src/test/java/IsogramCheckerTest.java
+++ b/clean-code-challanges/src/test/java/IsogramCheckerTest.java
@@ -4,7 +4,7 @@
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertTrue;
 
-@Ignore
+
 public class IsogramCheckerTest {
 
   @Test
diff --git a/clean-code-challanges/src/test/java/PigLatinTranslatorTest.java b/clean-code-challanges/src/test/java/PigLatinTranslatorTest.java
index c26cdcd..89071b9 100644
--- a/clean-code-challanges/src/test/java/PigLatinTranslatorTest.java
+++ b/clean-code-challanges/src/test/java/PigLatinTranslatorTest.java
@@ -1,3 +1,4 @@
+import org.junit.Ignore;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.junit.runners.Parameterized;
@@ -7,6 +8,7 @@
 
 import static org.junit.Assert.assertEquals;
 
+@Ignore
 @RunWith(Parameterized.class)
 public class PigLatinTranslatorTest {