diff --git a/IO/config/ImageWriter.h.in b/IO/config/ImageWriter.h.in
index e099553..c876a08 100644
--- a/IO/config/ImageWriter.h.in
+++ b/IO/config/ImageWriter.h.in
@@ -78,8 +78,8 @@ class ImageWriter {
   uint32 GetWidth() const { return m_Width; }
   uint32 GetHeight() const { return m_Height; }
   uint32 GetImageDataSz() const { return m_Width * m_Height * 4; }
-	uint32 GetRawFileDataSz() const { return m_RawFileDataSz; }
-	uint8 *GetRawFileData() const { return m_RawFileData; }
+  uint32 GetRawFileDataSz() const { return m_RawFileDataSz; }
+  uint8 *GetRawFileData() const { return m_RawFileData; }
   virtual bool WriteImage() = 0;
 };