diff --git a/Modules/xxmodule.c b/Modules/xxmodule.c
index 8de3c5d..529f521 100644
--- a/Modules/xxmodule.c
+++ b/Modules/xxmodule.c
@@ -237,7 +237,7 @@
 
 /* Initialization function for the module (*must* be called initxx) */
 
-void
+DL_EXPORT(void)
 initxx()
 {
 	PyObject *m, *d;