diff --git a/distributional_graphormer/catalyst-adsorption/graphormer/data/algos.c b/distributional_graphormer/catalyst-adsorption/graphormer/data/algos.c
index 57cc792..b8836e4 100644
--- a/distributional_graphormer/catalyst-adsorption/graphormer/data/algos.c
+++ b/distributional_graphormer/catalyst-adsorption/graphormer/data/algos.c
@@ -10074,7 +10074,6 @@ __Pyx_CyFunction_get_is_coroutine(__pyx_CyFunctionObject *op, void *context) {
         PyList_SET_ITEM(fromlist, 0, marker);
 #else
         if (unlikely(PyList_SetItem(fromlist, 0, marker) < 0)) {
-            Py_DECREF(marker);
             Py_DECREF(fromlist);
             return NULL;
         }