diff --git a/src/osx/carbon/choice.cpp b/src/osx/carbon/choice.cpp
index 00eb309d38..182d21f3e1 100644
--- a/src/osx/carbon/choice.cpp
+++ b/src/osx/carbon/choice.cpp
@@ -36,7 +36,7 @@ public :
         wxMacControl::SetValue( v + 1 );
     }
     
-    wxInt32 GetValue()
+    wxInt32 GetValue() const
     {
         return wxMacControl::GetValue() - 1;
     }
diff --git a/src/osx/choice_osx.cpp b/src/osx/choice_osx.cpp
index 4bc08e371b..f871ed3d26 100644
--- a/src/osx/choice_osx.cpp
+++ b/src/osx/choice_osx.cpp
@@ -169,12 +169,12 @@ void wxChoice::DoClear()
 // ----------------------------------------------------------------------------
 int wxChoice::GetSelection() const
 {
-    return m_peer->GetValue() -1;
+    return m_peer->GetValue();
 }
 
 void wxChoice::SetSelection( int n )
 {
-    m_peer->SetValue( n ) ;
+    m_peer->SetValue( n );
 }
 
 // ----------------------------------------------------------------------------