diff --git a/Include/pythonrun.h b/Include/pythonrun.h
index 490613e..514d3bc 100644
--- a/Include/pythonrun.h
+++ b/Include/pythonrun.h
@@ -82,7 +82,7 @@
 	PyRun_AnyFileExFlags(fp, name, closeit, NULL)
 #define PyRun_AnyFileFlags(fp, name, flags) \
 	PyRun_AnyFileExFlags(fp, name, 0, flags)
-#define PyRun_SimpleString(s, f) PyRunSimpleStringFlags(s, f, NULL)
+#define PyRun_SimpleString(s) PyRun_SimpleStringFlags(s, NULL)
 #define PyRun_SimpleFile(f, p) PyRun_SimpleFileExFlags(f, p, 0, NULL)
 #define PyRun_SimpleFileEx(f, p, c) PyRun_SimpleFileExFlags(f, p, c, NULL)
 #define PyRun_InteractiveOne(f, p) PyRun_InteractiveOneFlags(f, p, NULL)