diff --git a/src/tree.h b/src/tree.h
index 0fe7264..cf1ac16 100644
--- a/src/tree.h
+++ b/src/tree.h
@@ -189,7 +189,7 @@
 /**
  * @brief Stringified YANG built-in data types
  */
-extern const char* ly_data_type2str[LY_DATA_TYPE_COUNT];
+extern const char *ly_data_type2str[LY_DATA_TYPE_COUNT];
 
 /** @} trees */