diff --git a/org.hl7.fhir.r5/src/test/java/org/hl7/fhir/r5/test/UtilitiesTests.java b/org.hl7.fhir.r5/src/test/java/org/hl7/fhir/r5/test/UtilitiesTests.java
index 45e37fa44..3a75280b1 100644
--- a/org.hl7.fhir.r5/src/test/java/org/hl7/fhir/r5/test/UtilitiesTests.java
+++ b/org.hl7.fhir.r5/src/test/java/org/hl7/fhir/r5/test/UtilitiesTests.java
@@ -1,6 +1,9 @@
 package org.hl7.fhir.r5.test;
 
+import java.io.File;
 import java.io.IOException;
+import java.nio.file.Path;
+
 import org.apache.commons.lang3.SystemUtils;
 
 import org.hl7.fhir.utilities.Utilities;
@@ -20,7 +23,7 @@ public class UtilitiesTests {
   public void testPath() throws IOException {
     Assert.assertEquals(Utilities.path("[tmp]", "test.txt"),  SystemUtils.IS_OS_WINDOWS ? "c:\\temp\\test.txt" : "/tmp/test.txt");
     Assert.assertEquals(Utilities.path("[user]", "test.txt"), System.getProperty("user.home")+"\\test.txt");
-    Assert.assertEquals(Utilities.path("[JAVA_HOME]", "test.txt"), System.getenv("JAVA_HOME")+"\\test.txt");
+    Assert.assertEquals(Utilities.path("[JAVA_HOME]", "test.txt"), System.getenv("JAVA_HOME")+File.separator+"test.txt");
   }
 
   @Test