diff --git a/include/wx/propgrid/propgrid.h b/include/wx/propgrid/propgrid.h
index 03ab0b5092..ef09f1e7d9 100644
--- a/include/wx/propgrid/propgrid.h
+++ b/include/wx/propgrid/propgrid.h
@@ -1557,10 +1557,7 @@ public:
                                             wxString& src_str );
 
     // Checks system screen design used for laying out various dialogs.
-    static bool IsSmallScreen()
-    {
-        return wxSystemSettings::GetScreenType() <= wxSYS_SCREEN_PDA;
-    }
+    static bool IsSmallScreen();
 
     /**
         Returns rectangle that fully contains properties between and including
diff --git a/src/propgrid/propgrid.cpp b/src/propgrid/propgrid.cpp
index 27bc95b18a..4cef09ac8a 100644
--- a/src/propgrid/propgrid.cpp
+++ b/src/propgrid/propgrid.cpp
@@ -46,6 +46,7 @@
     #include "wx/intl.h"
     #include "wx/frame.h"
     #include "wx/textctrl.h"
+    #include "wx/settings.h"
 #endif
 
 
@@ -1842,6 +1843,13 @@ wxString& wxPropertyGrid::CreateEscapeSequences( wxString& dst_str, wxString& sr
 
 // -----------------------------------------------------------------------
 
+bool wxPropertyGrid::IsSmallScreen()
+{
+    return wxSystemSettings::GetScreenType() <= wxSYS_SCREEN_PDA;
+}
+
+// -----------------------------------------------------------------------
+
 wxPGProperty* wxPropertyGrid::DoGetItemAtY( int y ) const
 {
     // Outside?