diff --git a/micro_manager/micro_manager.py b/micro_manager/micro_manager.py
index 75e8cf0b..1e682aaf 100644
--- a/micro_manager/micro_manager.py
+++ b/micro_manager/micro_manager.py
@@ -71,7 +71,6 @@ def __init__(self, config_file: str) -> None:
             self._size)
 
         micro_file_name = self._config.get_micro_file_name()
-        self._micro_problem = getattr(__import__(micro_file_name, fromlist=["MicroSimulation"]), "MicroSimulation")
 
         self._macro_mesh_name = self._config.get_macro_mesh_name()