1diff --git a/src/c/_cffi_backend.c b/src/c/_cffi_backend.c
2index 537271f..9c3bf94 100644
3--- a/src/c/_cffi_backend.c
4+++ b/src/c/_cffi_backend.c
5@@ -103,7 +103,7 @@
6 # define CFFI_CHECK_FFI_PREP_CIF_VAR 0
7 # define CFFI_CHECK_FFI_PREP_CIF_VAR_MAYBE 0
8
9-#elif defined(__APPLE__) && defined(FFI_AVAILABLE_APPLE)
10+#elif defined(__APPLE__)
11
12 # define CFFI_CHECK_FFI_CLOSURE_ALLOC __builtin_available(macos 10.15, ios 13, watchos 6, tvos 13, *)
13 # define CFFI_CHECK_FFI_CLOSURE_ALLOC_MAYBE 1
14@@ -6422,7 +6422,7 @@ static PyObject *b_callback(PyObject *self, PyObject *args)
15 else
16 #endif
17 {
18-#if defined(__APPLE__) && defined(FFI_AVAILABLE_APPLE) && !FFI_LEGACY_CLOSURE_API
19+#if defined(__APPLE__) && !FFI_LEGACY_CLOSURE_API
20 PyErr_Format(PyExc_SystemError, "ffi_prep_closure_loc() is missing");
21 goto error;
22 #else