fix error message

diff --git a/Cython/Compiler/ExprNodes.py b/Cython/Compiler/ExprNodes.py
index 4f2f29818059682aa13e79adc08e3151ab8803f9..bd35c026bd7edcff68c6405d33b07b2e227ac93d 100644 (file)
--- a/Cython/Compiler/ExprNodes.py
+++ b/Cython/Compiler/ExprNodes.py
@@ -5799,7 +5799,7 @@ static INLINE void __Pyx_RaiseNoneNotIterableError(void);
 """,
 impl = '''
 static INLINE void __Pyx_RaiseNoneNotIterableError(void) {
-    PyErr_SetString(PyExc_TypeError, "'NoneType' object is iterable");
+    PyErr_SetString(PyExc_TypeError, "'NoneType' object is not iterable");
 }
 ''')