1 files changed, 2 insertions, 0 deletions
diff --git a/src/pinyin.h b/src/pinyin.h
index a360a3c..88f1fb5 100644
--- a/src/pinyin.h
+++ b/src/pinyin.h
@@ -15,4 +15,6 @@
 /* training module */
 #include "flexible_ngram.h"
 
+using namespace pinyin;
+
 typedef struct _pinyin_context_t pinyin_context_t;