diff --git a/src/common/imagpng.cpp b/src/common/imagpng.cpp
index f5f0d82924..41b1378528 100644
--- a/src/common/imagpng.cpp
+++ b/src/common/imagpng.cpp
@@ -522,7 +522,7 @@ wxPNGHandler::LoadFile(wxImage *image,
     png_structp png_ptr = png_create_read_struct
                           (
                             PNG_LIBPNG_VER_STRING,
-                            (voidp) NULL,
+                            NULL,
                             wx_png_error,
                             wx_png_warning
                           );