diff --git a/readme.txt b/readme.txt
index 8947fde..b0ea273 100644
--- a/readme.txt
+++ b/readme.txt
@@ -64,7 +64,7 @@ urc    : full name of user-supplied class implementing IIdentifierRenamer. It is
          should be renamed and provides new identifier names. For more information see section 5
 inn (1): check for IntelliJ IDEA-specific @NotNull annotation and remove inserted code if found
 lac (0): decompile lambda expressions to anonymous classes
-nls (0): define new line character to be used for output. 0 - '\r\n' (Windows), 1 - '\n' (Linux) 
+nls (0): define new line character to be used for output. 0 - '\r\n' (Windows), 1 - '\n' (Linux), default is OS-dependent
 ind    : indentation string (default is "   " (3 spaces))
  
 The default logging level is INFO. This value can be overwritten by setting the option 'log' as follows:
diff --git a/src/org/jetbrains/java/decompiler/main/extern/IFernflowerPreferences.java b/src/org/jetbrains/java/decompiler/main/extern/IFernflowerPreferences.java
index 2052a99..4ef8ba9 100644
--- a/src/org/jetbrains/java/decompiler/main/extern/IFernflowerPreferences.java
+++ b/src/org/jetbrains/java/decompiler/main/extern/IFernflowerPreferences.java
@@ -75,9 +75,10 @@ public interface IFernflowerPreferences {
     put(IDEA_NOT_NULL_ANNOTATION, "1");
     put(LAMBDA_TO_ANONYMOUS_CLASS, "0");
 
+    boolean win = System.getProperty("os.name", "").startsWith("Windows");
     put(MAX_PROCESSING_METHOD, "0");
     put(RENAME_ENTITIES, "0");
-    put(NEW_LINE_SEPARATOR, "0");
+    put(NEW_LINE_SEPARATOR, (win ? "0" : "1"));
     put(INDENT_STRING, "   ");
   }});
 }