diff --git a/CMakeLists.txt b/CMakeLists.txt
index a46c0557..a3dfda58 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,8 @@
 cmake_minimum_required(VERSION 2.6)
+cmake_policy(VERSION 2.6)
+if(POLICY CMP0037)
+  cmake_policy(SET CMP0037 OLD)
+endif()
 
 PROJECT(picrin)
 
diff --git a/docs/libs.rst b/docs/libs.rst
index bd87e98b..5227e265 100644
--- a/docs/libs.rst
+++ b/docs/libs.rst
@@ -233,9 +233,13 @@ Object-to-object table. Internally it is implemented on hash-table. Equivalence
 
 Note that dictionary is not a weak map; if you are going to make a highly memory-consuming program with dictionaries, you should know that dictionaries keep their bound objects and never let them free until you explicitly deletes bindings.
 
+- **(make-dictionary)**
+
+  Returns a newly allocated empty dictionary.
+
 - **(dictionary . plist)**
 
-  Returns a newly allocated empty dictionary. The dictionary is initialized with the content of plist.
+  Returns a dictionary initialized with the content of plist.
 
 - **(dictionary? obj)**