1 files changed, 1 insertions, 1 deletions
diff --git a/c/call_python.c b/c/call_python.c
index 6e15ca3..b41042b 100644
--- a/c/call_python.c
+++ b/c/call_python.c
@@ -51,7 +51,7 @@ static PyObject *_get_interpstate_dict(void)
 
 static PyObject *_ffi_def_extern_decorator(PyObject *outer_args, PyObject *fn)
 {
-    char *s;
+    const char *s;
     PyObject *error, *onerror, *infotuple, *old1;
     int index, err;
     const struct _cffi_global_s *g;