diff --git a/src/sync-diff-leaf.h b/src/sync-diff-leaf.h
index 6e09efe..c7862af 100644
--- a/src/sync-diff-leaf.h
+++ b/src/sync-diff-leaf.h
@@ -17,7 +17,7 @@
  *
  * Author: Zhenkai Zhu <zhenkai@cs.ucla.edu>
  *         Chaoyi Bian <bcy@pku.edu.cn>
- *	   Alexander Afanasyev <alexander.afanasyev@ucla.edu>
+ *         Alexander Afanasyev <alexander.afanasyev@ucla.edu>
  */
 
 #ifndef SYNC_DIFF_LEAF_H
@@ -40,7 +40,7 @@
 
 /**
  * @ingroup sync
- * @brief Annotated SYNC leaf 
+ * @brief Annotated SYNC leaf
  */
 class DiffLeaf : public Leaf
 {