diff --git a/src/gui/main_window.cpp b/src/gui/main_window.cpp
index 3b21200..a7aabd3 100644
--- a/src/gui/main_window.cpp
+++ b/src/gui/main_window.cpp
@@ -133,7 +133,12 @@ void MainWindow::stop_evolve() {
 }
 
 void MainWindow::evolve_step() {
-  automaton_->evolve();
+  bool success = automaton_->evolve();
+  if (!success) {
+    logger_->log("Error occurred while evolving, stop.");
+    stop_evolve();
+    return;
+  }
   viewer_->display_automaton();
 }
 
@@ -231,4 +236,4 @@ void MainWindow::resize_automaton(const size_t& depth,
   }
   viewer_->reset_view();
   viewer_->display_automaton();
-}
\ No newline at end of file
+}