diff --git a/src/H5BlockPrivate.h b/src/H5BlockPrivate.h
index 5a011be..6cc5ec1 100644
--- a/src/H5BlockPrivate.h
+++ b/src/H5BlockPrivate.h
@@ -1,6 +1,6 @@
 #ifndef __H5BLOCKPRIVATE_H
 #define __H5BLOCKPRIVATE_H
 
-#define H5BLOCK_GROUP_NAME	"Block"
+#define H5BLOCK_GROUPNAME_BLOCK	"Block"
 
 #endif