diff --git a/onnxmltools/convert/xgboost/operator_converters/XGBoost.py b/onnxmltools/convert/xgboost/operator_converters/XGBoost.py
index cb43ca1f..6f3fdc2e 100644
--- a/onnxmltools/convert/xgboost/operator_converters/XGBoost.py
+++ b/onnxmltools/convert/xgboost/operator_converters/XGBoost.py
@@ -75,7 +75,7 @@ def _add_node(attr_pairs, is_classifier, tree_id, tree_weight, node_id,
                             feature_id))
             else:
                 try:
-                    feature_id = int(feature_id)
+                    feature_id = int(float(feature_id))
                 except ValueError:
                     raise RuntimeError(
                         "Unable to interpret '{0}', feature "