diff --git a/util/file_test.go b/util/file_test.go
index eeace64..3399da1 100644
--- a/util/file_test.go
+++ b/util/file_test.go
@@ -10,26 +10,25 @@ import (
 // define our test suite struct
 type FileTestSuite struct {
 	suite.Suite
+	TestFile string
 }
 
 // run before tests to set up
 func (s *FileTestSuite) SetupSuite() {
+	s.TestFile = "testfile.txt"
 	// create the test file for file lock testing
-	file1, _ := os.Create("testfile-locked.txt")
-	file1.Close() // do this just to make extra sure the file handle is closed
-	file2, _ := os.Create("testfile-unlocked.txt")
-	file2.Close()
+	file, _ := os.Create(s.TestFile)
+	file.Close() // do this just to make extra sure the file handle is closed
 }
 // run after tests to clean up
 func (s *FileTestSuite) TearDownSuite() {
 	// remove the test file since it's no longer needed
-	os.Remove("testfile-locked.txt")
-	os.Remove("testfile-unlocked.txt")
+	os.Remove(s.TestFile)
 }
 
 // test the filename extension removal works
 func (s *FileTestSuite) TestFilenameWithoutExtension() {
-	filename := FilenameWithoutExtension("testfile.txt")
+	filename := FilenameWithoutExtension(s.TestFile)
 
 	if filename != "testfile" {
 		s.T().Logf("FilenameWithoutExtension returned '%s'; it should be 'testfile'.", filename)
@@ -38,25 +37,25 @@ func (s *FileTestSuite) TestFilenameWithoutExtension() {
 
 // test that IsFileLocked returns true when the file is active
 func (s *FileTestSuite) TestFileShouldBeLocked() {
-	file, err := os.Open("testfile-locked.txt")
+	file, err := os.Open(s.TestFile)
 	if err != nil {
-		s.T().Logf("Unable to open file %s: %s", "testfile-locked.txt", err)
+		s.T().Logf("Unable to open file %s: %s", s.TestFile, err)
 	}
 
-	assert.True(s.T(), IsFileLocked("testfile-locked.txt"))
+	assert.True(s.T(), IsFileLocked(s.TestFile))
 
 	file.Close()
 }
 
 // test that IsFileLocked returns false when the file is not active
 func (s *FileTestSuite) TestFileShouldNotBeLocked() {
-	file, err := os.Open("testfile-unlocked.txt")
+	file, err := os.Open(s.TestFile)
 	if err != nil {
-		s.T().Logf("Unable to open file %s: %s", "testfile-unlocked.txt", err)
+		s.T().Logf("Unable to open file %s: %s", s.TestFile, err)
 	}
 	file.Close() // we want this closed now so it's NOT open!
 
-	assert.False(s.T(), IsFileLocked("testfile-unlocked.txt"))
+	assert.False(s.T(), IsFileLocked(s.TestFile))
 }
 
 // this is needed to run the test suite