diff --git a/Parser/intrcheck.c b/Parser/intrcheck.c
index 2529655..dd53a1a 100644
--- a/Parser/intrcheck.c
+++ b/Parser/intrcheck.c
@@ -124,6 +124,12 @@
 
 static int interrupted;
 
+void
+PyErr_SetInterrupt()
+{
+	interrupted = 1;
+}
+
 /* ARGSUSED */
 static RETSIGTYPE
 #ifdef _M_IX86