diff --git a/test/testcase/diffutills/DiffTest.java b/test/testcase/diffutils/DiffTest.java
similarity index 99%
rename from test/testcase/diffutills/DiffTest.java
rename to test/testcase/diffutils/DiffTest.java
index 369e336..3dcf22e 100644
--- a/test/testcase/diffutills/DiffTest.java
+++ b/test/testcase/diffutils/DiffTest.java
@@ -1,4 +1,4 @@
-package diffutills;
+package diffutils;
 
 import java.util.*;
 
diff --git a/test/testcase/diffutills/GenerateUnifiedDiffTest.java b/test/testcase/diffutils/GenerateUnifiedDiffTest.java
similarity index 99%
rename from test/testcase/diffutills/GenerateUnifiedDiffTest.java
rename to test/testcase/diffutils/GenerateUnifiedDiffTest.java
index 950ed80..6e6eba2 100644
--- a/test/testcase/diffutills/GenerateUnifiedDiffTest.java
+++ b/test/testcase/diffutils/GenerateUnifiedDiffTest.java
@@ -1,4 +1,4 @@
-package diffutills;
+package diffutils;
 
 import difflib.DiffUtils;
 import difflib.Patch;
diff --git a/test/testcase/diffutills/PatchTest.java b/test/testcase/diffutils/PatchTest.java
similarity index 98%
rename from test/testcase/diffutills/PatchTest.java
rename to test/testcase/diffutils/PatchTest.java
index bf13218..2955bb6 100644
--- a/test/testcase/diffutills/PatchTest.java
+++ b/test/testcase/diffutils/PatchTest.java
@@ -1,4 +1,4 @@
-package diffutills;
+package diffutils;
 
 import java.util.Arrays;
 import java.util.List;