diff --git a/Misc/NEWS b/Misc/NEWS
index 04aa21f..77e97f0 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -12,8 +12,6 @@
 Core and builtins
 -----------------
 
-- Prevent a segfault when a ctypes NULL function pointer is called.
-
 - Bug #1517: Possible segfault in lookup().
 
 - Issue #1638: %zd configure test fails on Linux.
@@ -171,6 +169,10 @@
 Extension Modules
 -----------------
 
+- Fix a potential 'SystemError: NULL result without error' in _ctypes.
+
+- Prevent a segfault when a ctypes NULL function pointer is called.
+
 - Bug #1301: Bad assert in _tkinter fixed.
 
 - Patch #1114: fix curses module compilation on 64-bit AIX, & possibly
diff --git a/Modules/_ctypes/_ctypes.c b/Modules/_ctypes/_ctypes.c
index 47fab8a..fe772ac 100644
--- a/Modules/_ctypes/_ctypes.c
+++ b/Modules/_ctypes/_ctypes.c
@@ -2896,7 +2896,7 @@
 		|| PyLong_Check(PyTuple_GET_ITEM(args, 0)))) {
 		CDataObject *ob;
 		void *ptr = PyLong_AsVoidPtr(PyTuple_GET_ITEM(args, 0));
-		if (ptr == NULL)
+		if (ptr == NULL && PyErr_Occurred())
 			return NULL;
 		ob = (CDataObject *)GenericCData_new(type, args, kwds);
 		if (ob == NULL)