diff --git a/Include/pythonrun.h b/Include/pythonrun.h
index f245367..af7ddf9 100644
--- a/Include/pythonrun.h
+++ b/Include/pythonrun.h
@@ -55,6 +55,8 @@
 
 void Py_Cleanup Py_PROTO((void));
 
+void Py_FatalError Py_PROTO((char *));
+
 #ifdef __cplusplus
 }
 #endif