diff --git a/contrib/platform/test/com/sun/jna/platform/win32/Advapi32Test.java b/contrib/platform/test/com/sun/jna/platform/win32/Advapi32Test.java
index bbddb75e6..18446ccb5 100755
--- a/contrib/platform/test/com/sun/jna/platform/win32/Advapi32Test.java
+++ b/contrib/platform/test/com/sun/jna/platform/win32/Advapi32Test.java
@@ -2146,7 +2146,7 @@ private File createTempFile() throws Exception {
         file.createNewFile();
         FileWriter fileWriter = new FileWriter(file);
         for (int i = 0; i < 1000; i++) {
-            fileWriter.write("Sample text " + i + System.getProperty("line.separator"));
+            fileWriter.write("Sample text " + i + System.lineSeparator());
         }
         fileWriter.close();
         return file;
diff --git a/contrib/platform/test/com/sun/jna/platform/win32/Advapi32UtilTest.java b/contrib/platform/test/com/sun/jna/platform/win32/Advapi32UtilTest.java
index 21070aaea..1c8a739ae 100755
--- a/contrib/platform/test/com/sun/jna/platform/win32/Advapi32UtilTest.java
+++ b/contrib/platform/test/com/sun/jna/platform/win32/Advapi32UtilTest.java
@@ -934,7 +934,7 @@ private File createTempFile() throws Exception{
         file.createNewFile();
         FileWriter fileWriter = new FileWriter(file);
         for (int i = 0; i < 1000; i++) {
-            fileWriter.write("Sample text " + i + System.getProperty("line.separator"));
+            fileWriter.write("Sample text " + i + System.lineSeparator());
         }
         fileWriter.close();
         return file;
diff --git a/contrib/platform/test/com/sun/jna/platform/win32/NtDllTest.java b/contrib/platform/test/com/sun/jna/platform/win32/NtDllTest.java
index 4ce1b1947..3088999d6 100644
--- a/contrib/platform/test/com/sun/jna/platform/win32/NtDllTest.java
+++ b/contrib/platform/test/com/sun/jna/platform/win32/NtDllTest.java
@@ -130,7 +130,7 @@ private File createTempFile() throws Exception {
         file.createNewFile();
         FileWriter fileWriter = new FileWriter(file);
         for (int i = 0; i < 1000; i++) {
-            fileWriter.write("Sample text " + i + System.getProperty("line.separator"));
+            fileWriter.write("Sample text " + i + System.lineSeparator());
         }
         fileWriter.close();
         return file;
diff --git a/contrib/platform/test/com/sun/jna/platform/win32/Shell32Test.java b/contrib/platform/test/com/sun/jna/platform/win32/Shell32Test.java
index 20c529669..570b8fbd1 100644
--- a/contrib/platform/test/com/sun/jna/platform/win32/Shell32Test.java
+++ b/contrib/platform/test/com/sun/jna/platform/win32/Shell32Test.java
@@ -231,7 +231,7 @@ private void fillTempFile(File file) throws IOException {
         try (FileWriter fileWriter = new FileWriter(file)) {
             for (int i = 0; i < 10; i++) {
                 fileWriter.write("Sample line of text");
-                fileWriter.write(System.getProperty("line.separator"));
+                fileWriter.write(System.lineSeparator());
             }
         }
     }