diff --git a/source4/scripting/python/modules.c b/source4/scripting/python/modules.c
index abf5c46015e..78cdbc0d879 100644
--- a/source4/scripting/python/modules.c
+++ b/source4/scripting/python/modules.c
@@ -31,7 +31,7 @@ static bool PySys_PathPrepend(PyObject *list, const char *path)
 	return (PyList_Insert(list, 0, py_path) == 0);
 }
 
-bool py_update_path()
+bool py_update_path(void)
 {
 	PyObject *mod_sys, *py_path;
 
diff --git a/source4/scripting/python/modules.h b/source4/scripting/python/modules.h
index 4e43e6de1dd..e7e97aa1bf4 100644
--- a/source4/scripting/python/modules.h
+++ b/source4/scripting/python/modules.h
@@ -20,6 +20,6 @@
 #ifndef __SAMBA_PYTHON_MODULES_H__
 #define __SAMBA_PYTHON_MODULES_H__
 
-bool py_update_path();
+bool py_update_path(void);
 
 #endif /* __SAMBA_PYTHON_MODULES_H__ */