diff --git a/include/wx/filefn.h b/include/wx/filefn.h
index c58e9e5ace..280a1ffbed 100644
--- a/include/wx/filefn.h
+++ b/include/wx/filefn.h
@@ -459,7 +459,7 @@ WXDLLIMPEXP_BASE bool wxRmdir(const wxString& dir, int flags = 0);
 
 // Return the type of an open file
 WXDLLIMPEXP_BASE wxFileKind wxGetFileKind(int fd);
-inline wxFileKind wxGetFileKind (FILE *fp) { return wxGetFileKind(fileno(fp)); }
+WXDLLIMPEXP_BASE wxFileKind wxGetFileKind(FILE *fp);
 
 // compatibility defines, don't use in new code
 #define wxDirExists wxPathExists
diff --git a/src/common/filefn.cpp b/src/common/filefn.cpp
index fbb1a719bb..9f34f44509 100644
--- a/src/common/filefn.cpp
+++ b/src/common/filefn.cpp
@@ -1936,11 +1936,22 @@ wxFileKind wxGetFileKind(int fd)
     return wxFILE_KIND_DISK;
 
 #else
+    #define wxFILEKIND_STUB
     (void)fd;
     return wxFILE_KIND_DISK;
 #endif
 }
 
+wxFileKind wxGetFileKind(FILE *fp)
+{
+#ifndef wxFILEKIND_STUB
+    return wxGetFileKind(fileno(fp));
+#else
+    (void)fp;
+    return wxFILE_KIND_DISK;
+#endif
+}
+
 #ifdef __VISUALC__
     #pragma warning(default:4706)   // assignment within conditional expression
 #endif // VC++