diff --git a/src/PYLibPinyin.h b/src/PYLibPinyin.h
index 820dd081..f8e08663 100644
--- a/src/PYLibPinyin.h
+++ b/src/PYLibPinyin.h
@@ -24,6 +24,7 @@
 #include <memory>
 #include <time.h>
 #include <glib.h>
+#include <stdio.h>
 
 typedef struct _pinyin_context_t pinyin_context_t;
 typedef struct _pinyin_instance_t pinyin_instance_t;