diff --git a/json/tree.cpp b/json/tree.cpp
index 52e05eda..c1a81e16 100644
--- a/json/tree.cpp
+++ b/json/tree.cpp
@@ -268,6 +268,15 @@ json::tree::node::as_null (void)
 
 
 ///////////////////////////////////////////////////////////////////////////////
+
+bool
+json::tree::node::as_bool (void) const
+{
+    return !!as_boolean ();
+}
+
+
+//-----------------------------------------------------------------------------
 float
 json::tree::node::as_float (void) const
 {
diff --git a/json/tree.hpp b/json/tree.hpp
index 4452c1b6..49f522d8 100644
--- a/json/tree.hpp
+++ b/json/tree.hpp
@@ -70,6 +70,7 @@ namespace json { namespace tree {
             virtual boolean& as_boolean (void);
             virtual null&    as_null    (void);
 
+            virtual bool   as_bool   (void) const;
             virtual float  as_float  (void) const;
             virtual double as_double (void) const;
             virtual size_t as_uint   (void) const;