diff --git a/include/wx/filefn.h b/include/wx/filefn.h
index c5bdf72ef4..d57060e1cb 100644
--- a/include/wx/filefn.h
+++ b/include/wx/filefn.h
@@ -190,6 +190,10 @@ enum wxFileKind
         #define wxHAS_HUGE_STDIO_FILES
         #define wxFseek _fseeki64
         #define wxFtell _ftelli64
+    #elif wxCHECK_MINGW32_VERSION(3, 5) // mingw-runtime version (not gcc)
+        #define wxHAS_HUGE_STDIO_FILES
+        #define wxFseek fseeko64
+        #define wxFtell ftello64
     #endif
 
     // other Windows compilers (DMC, Watcom, Metrowerks and Borland) don't have
diff --git a/include/wx/platform.h b/include/wx/platform.h
index 33770bcb42..dd343949e5 100644
--- a/include/wx/platform.h
+++ b/include/wx/platform.h
@@ -652,6 +652,8 @@
 #else
 #    undef wxCHECK_W32API_VERSION
 #    define wxCHECK_W32API_VERSION(maj, min) (0)
+#    undef wxCHECK_MINGW32_VERSION
+#    define wxCHECK_MINGW32_VERSION(maj, min) (0)
 #endif
 
 /**