diff --git a/src/gtk1/choice.cpp b/src/gtk1/choice.cpp
index a822e02ca6..1488c40ebc 100644
--- a/src/gtk1/choice.cpp
+++ b/src/gtk1/choice.cpp
@@ -125,7 +125,7 @@ bool wxChoice::Create( wxWindow *parent, wxWindowID id,
     {
         // if our m_strings != NULL, Append() will check for it and insert
         // items in the correct order
-        m_strings = new wxSortedArrayString;
+        m_strings = new wxSortedArrayString(wxDictionaryStringSortAscending);
     }
 
     // begin with no selection
diff --git a/src/gtk1/listbox.cpp b/src/gtk1/listbox.cpp
index 1220748fa7..316bed1321 100644
--- a/src/gtk1/listbox.cpp
+++ b/src/gtk1/listbox.cpp
@@ -541,7 +541,7 @@ bool wxListBox::Create( wxWindow *parent, wxWindowID id,
     if ( style & wxLB_SORT )
     {
         // this will change Append() behaviour
-        m_strings = new wxSortedArrayString;
+        m_strings = new wxSortedArrayString(wxDictionaryStringSortAscending);
     }
     else
     {
diff --git a/src/osx/listbox_osx.cpp b/src/osx/listbox_osx.cpp
index c48607ea5a..964b806f21 100644
--- a/src/osx/listbox_osx.cpp
+++ b/src/osx/listbox_osx.cpp
@@ -83,7 +83,7 @@ bool wxListBox::Create(
         return false;
 
     if ( IsSorted() )
-        m_strings.sorted = new wxSortedArrayString;
+        m_strings.sorted = new wxSortedArrayString(wxDictionaryStringSortAscending);
     else
         m_strings.unsorted = new wxArrayString;
 
diff --git a/src/univ/listbox.cpp b/src/univ/listbox.cpp
index e549c27953..a448b9cbb9 100644
--- a/src/univ/listbox.cpp
+++ b/src/univ/listbox.cpp
@@ -190,7 +190,7 @@ bool wxListBox::Create(wxWindow *parent,
         return false;
 
     if ( IsSorted() )
-        m_strings.sorted = new wxSortedArrayString;
+        m_strings.sorted = new wxSortedArrayString(wxDictionaryStringSortAscending);
     else
         m_strings.unsorted = new wxArrayString;