1 files changed, 2 insertions, 0 deletions
diff --git a/source/blender/python/bmesh/bmesh_py_types_customdata.c b/source/blender/python/bmesh/bmesh_py_types_customdata.c
index ff06cf43026..0aa92158524 100644
--- a/source/blender/python/bmesh/bmesh_py_types_customdata.c
+++ b/source/blender/python/bmesh/bmesh_py_types_customdata.c
@@ -843,9 +843,11 @@ static PyObject *bpy_bmlayercollection_subscript(BPy_BMLayerCollection *self, Py
       const Py_ssize_t len = bpy_bmlayercollection_length(self);
       if (start < 0) {
         start += len;
+        CLAMP_MIN(start, 0);
       }
       if (stop < 0) {
         stop += len;
+        CLAMP_MIN(stop, 0);
       }
     }