diff --git a/wxPython/src/_printfw.i b/wxPython/src/_printfw.i
index 3db7911302..fb390d0979 100644
--- a/wxPython/src/_printfw.i
+++ b/wxPython/src/_printfw.i
@@ -625,7 +625,7 @@ public:
     bool CLASS::CBNAME(wxPreviewCanvas* a, wxDC& b) {                                   \
         bool rval=false;                                                                \
         bool found;                                                                     \
-        wxPyBlock_t blocked = wxPyBeginBlockThreads();                                         \
+        wxPyBlock_t blocked = wxPyBeginBlockThreads();                                  \
         if ((found = wxPyCBH_findCallback(m_myInst, #CBNAME))) {                        \
             PyObject* win = wxPyMake_wxObject(a,false);                                 \
             PyObject* dc  = wxPyMake_wxObject(&b,false);                                \
@@ -656,7 +656,7 @@ public:
     {}
     wxPyPrintPreview(wxPyPrintout* printout,
                      wxPyPrintout* printoutForPrinting,
-                     wxPrintData* data=NULL)
+                     wxPrintData* data)
         : wxPrintPreview(printout, printoutForPrinting, data)
     {}