diff --git a/src/operator/tensor/elemwise_binary_op_extended.cu b/src/operator/tensor/elemwise_binary_op_extended.cu
index 585d379b0bef..0ae6ac966a2b 100644
--- a/src/operator/tensor/elemwise_binary_op_extended.cu
+++ b/src/operator/tensor/elemwise_binary_op_extended.cu
@@ -20,7 +20,7 @@
 /*!
  *  Copyright (c) 2016 by Contributors
  * \file elemwise_binary_op_extended.cu
- * \brief GPU Implementation of unary function.
+ * \brief GPU Implementation of binary function.
  */
 #include "./elemwise_unary_op.h"
 #include "./elemwise_binary_op.h"