diff --git a/src/msw/combobox.cpp b/src/msw/combobox.cpp
index aad9581f87..a9bb62cb5e 100644
--- a/src/msw/combobox.cpp
+++ b/src/msw/combobox.cpp
@@ -251,6 +251,7 @@ WXLRESULT wxComboBox::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lPara
                 m_value = wxEmptyString;
             else
                 m_value = GetString(wParam);
+            m_selectionOld = -1;
             break;
     }