diff --git a/GUI/gui.py b/GUI/gui.py
index 1eb5332..8f40560 100644
--- a/GUI/gui.py
+++ b/GUI/gui.py
@@ -30,7 +30,6 @@ class GUI():
         self.configurator = ConfigImporter('GUI/gui.cfg')
         self.finish_with_search = False
         self.values = {}
-        self.window, self.variables = self.generate_window(self.load_common_attributes(), self.load_output_types())
         self.required_variables = ['substance']
         self.search = search
 
@@ -185,6 +184,7 @@ class GUI():
 
     def run(self):
         """Starts the window and the search."""
+        self.window, self.variables = self.generate_window(self.load_common_attributes(), self.load_output_types())
         self.window.mainloop()
         if self.finish_with_search:
             self.execute_search()
diff --git a/tests/test_gui.py b/tests/test_gui.py
index da6b470..afa6da9 100644
--- a/tests/test_gui.py
+++ b/tests/test_gui.py
@@ -7,19 +7,23 @@ class TestGUI(unittest.TestCase):
         pass
 
     def test_empty_attributes(self):
-        test_gui = gui.GUI()
+        test_gui = gui.GUI(None)
+        test_gui.configurator = gui.ConfigImporter('../GUI/gui.cfg')
+        test_gui.window.after(10, test_gui.window.destroy)
         test_gui.run()
         test_gui.prepare_search()
 
     def test_no_configurations(self):
-        import os
-        config_name = 'gui.cfg'
-        with open(config_name) as config_file:
-            file_contents = config_file.read()
-        os.remove(config_name)
-
-        test_gui = gui.GUI()
+        test_gui = gui.GUI(None)
+        test_gui.configurator = gui.ConfigImporter(None)
         test_gui.finish_with_search = True
+
+        test_gui.variables= {'substance':''}
+        test_gui.window.after(10, test_gui.prepare_search)
+        test_gui.window.after(10, test_gui.window.destroy)
         test_gui.run()
 
 
+
+
+