1 files changed, 2 insertions, 0 deletions

diff --git a/include/opkele/data.h b/include/opkele/data.h
index d0b0516..904b5ae 100644
--- a/include/opkele/data.h
+++ b/include/opkele/data.h
@@ -1,18 +1,20 @@
 #ifndef __OPKELE_DATA_H
 #define __OPKELE_DATA_H
 
 /**
  * @brief the main opkele namespace
  */
 namespace opkele {
 
     /**
      * @brief internal data opkele namespace
      */
     namespace data {
         extern const char *_default_p;
         extern const char *_default_g;
+        extern const char *_iname_leaders;
+        extern const char *_whitespace_chars;
     }
 }
 
 #endif /* __OPKELE_DATA_H */