diff --git a/source/blender/python/gpu/gpu_py_buffer.cc b/source/blender/python/gpu/gpu_py_buffer.cc
index a0aa7ebfc74..28fa29fd8fe 100644
--- a/source/blender/python/gpu/gpu_py_buffer.cc
+++ b/source/blender/python/gpu/gpu_py_buffer.cc
@@ -64,7 +64,7 @@ static bool pygpu_buffer_pyobj_as_shape(PyObject *shape_obj,
   Py_ssize_t shape_len = 0;
   if (PyLong_Check(shape_obj)) {
     shape_len = 1;
-    if ((r_shape[0] = PyLong_AsLong(shape_obj)) < 1) {
+    if ((r_shape[0] = PyLong_AsSsize_t(shape_obj)) < 1) {
       PyErr_SetString(PyExc_AttributeError, "dimension must be greater than or equal to 1");
       return false;
     }
@@ -92,7 +92,7 @@ static bool pygpu_buffer_pyobj_as_shape(PyObject *shape_obj,
         return false;
       }
 
-      r_shape[i] = PyLong_AsLong(ob);
+      r_shape[i] = PyLong_AsSsize_t(ob);
       Py_DECREF(ob);
 
       if (r_shape[i] < 1) {