Added declaration for PyErr_SetInterrupt.
diff --git a/Include/pyerrors.h b/Include/pyerrors.h
index 51d8e44..431d2e6 100644
--- a/Include/pyerrors.h
+++ b/Include/pyerrors.h
@@ -75,7 +75,10 @@
 
 extern void PyErr_BadInternalCall Py_PROTO((void));
 
-extern int PyErr_CheckSignals Py_PROTO((void)); /* In sigcheck.c or signalmodule.c */
+/* In sigcheck.c or signalmodule.c */
+extern int PyErr_CheckSignals Py_PROTO((void));
+extern void PyErr_SetInterrupt Py_PROTO((void));
+	
 
 #ifdef __cplusplus
 }