diff --git a/hpvm/include/SupportHPVM/HPVMUtils.h b/hpvm/include/SupportHPVM/HPVMUtils.h
index 25b9880180f2cb4590f5b5fcbb3f3f2fbe025f8f..3060c6c0321dc197023f24cd8fefe106e18562b7 100644
--- a/hpvm/include/SupportHPVM/HPVMUtils.h
+++ b/hpvm/include/SupportHPVM/HPVMUtils.h
@@ -7,6 +7,11 @@
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
+//
+// This filed defines utility functions used for target-specific code generation 
+// for different nodes of dataflow graphs. 
+//
+//===----------------------------------------------------------------------===//
 
 #ifndef HPVM_UTILS_HEADER
 #define HPVM_UTILS_HEADER