diff --git a/lib/pipe-ipc.js b/lib/pipe-ipc.js
index c3e6fa7..693c24a 100644
--- a/lib/pipe-ipc.js
+++ b/lib/pipe-ipc.js
@@ -105,24 +105,24 @@ function openTextFile(filename, iomode) {
 }
 
 function checkFileExists(filename) {
-	return UseObject("Scripting.FileSystemObject", function(fso) {
-		return fso.FileExists(filename);
-	});
+    return UseObject("Scripting.FileSystemObject", function(fso) {
+        return fso.FileExists(filename);
+    });
 }
 
 function deleteFile(filename) {
     if (checkFileExists(filename)) {
-		return UseObject("Scripting.FileSystemObject", function(fso) {
-			fso.DeleteFile(filename);
-		});
-	}
+        return UseObject("Scripting.FileSystemObject", function(fso) {
+            fso.DeleteFile(filename);
+        });
+    }
 }
 
 function getFileSize(filename) {
     try {
-		return UseObject("Scripting.FileSystemObject", function(fso) {
-			return fso.GetFile(filename).Size;
-		});
+        return UseObject("Scripting.FileSystemObject", function(fso) {
+            return fso.GetFile(filename).Size;
+        });
     } catch (e) {
         return -1; 
     }
@@ -408,15 +408,15 @@ function PipeIPC() {
                 }
                 
                 // Convert UTF-16 BOM to a character set
-				UseObject("ADODB.Stream", function(stream) {
-					stream.Type = adTypeText;
-					stream.Charset = charset;
-					stream.Open();
-					stream.WriteText(str);
-					stream = (new Converter()).repositionObject(stream, 3);
-					stream.SaveToFile(dst, adSaveCreateOverWrite);
-					stream.Close();
-				});
+                UseObject("ADODB.Stream", function(stream) {
+                    stream.Type = adTypeText;
+                    stream.Charset = charset;
+                    stream.Open();
+                    stream.WriteText(str);
+                    stream = (new Converter()).repositionObject(stream, 3);
+                    stream.SaveToFile(dst, adSaveCreateOverWrite);
+                    stream.Close();
+                });
 
                 // Set a result
                 isCommited = true;