diff --git a/Modules/sunaudiodev.c b/Modules/sunaudiodev.c
index 4f9d2bb..2774e05 100644
--- a/Modules/sunaudiodev.c
+++ b/Modules/sunaudiodev.c
@@ -51,7 +51,7 @@
 
 staticforward PyTypeObject Sadtype;
 staticforward PyTypeObject Sadstatustype;
-static sadstatusobject *sads_alloc();	/* Forward */
+static sadstatusobject *sads_alloc(void);	/* Forward */
 
 static PyObject *SunAudioError;
 
@@ -364,7 +364,7 @@
 /* ----------------------------------------------------------------- */
 
 static sadstatusobject *
-sads_alloc() {
+sads_alloc(void) {
 	return PyObject_New(sadstatusobject, &Sadstatustype);
 }