diff --git a/include/nana/gui/widgets/group.hpp b/include/nana/gui/widgets/group.hpp
index 79162f06..2e264289 100644
--- a/include/nana/gui/widgets/group.hpp
+++ b/include/nana/gui/widgets/group.hpp
@@ -19,6 +19,7 @@
 
 #include <nana/gui/place.hpp>
 #include <nana/gui/widgets/panel.hpp>
+#include <nana/gui/widgets/checkbox.hpp>
 
 namespace nana{
 	class group
@@ -49,7 +50,7 @@ namespace nana{
 		~group();
 
 		/// Adds an option for user selection
-		group& add_option(::std::string);
+		checkbox& add_option(::std::string);
 
 		/// Enables/disables the radio mode which is single selection
 		group& radio_mode(bool);
diff --git a/source/gui/widgets/group.cpp b/source/gui/widgets/group.cpp
index aa4d3346..91b1bd9a 100644
--- a/source/gui/widgets/group.cpp
+++ b/source/gui/widgets/group.cpp
@@ -103,7 +103,7 @@ namespace nana{
 		delete impl_->radio_logic;
 	}
 
-	group& group::add_option(std::string text)
+	checkbox& group::add_option(std::string text)
 	{
 		_THROW_IF_EMPTY()
 
@@ -118,7 +118,7 @@ namespace nana{
 		if (impl_->radio_logic)
 			impl_->radio_logic->add(*opt);
 
-		return *this;
+		return *impl_->options.back();
 	}
 
 	group& group::radio_mode(bool enable)