diff --git a/nw/error.py b/nw/error.py
index 6db88647..24a802aa 100644
--- a/nw/error.py
+++ b/nw/error.py
@@ -138,7 +138,6 @@ class NWErrorMessage(QDialog):
 def exceptionHandler(exType, exValue, exTrace):
     """Function to catch unhandled global exceptions.
     """
-    import nw
     import logging
     from traceback import print_tb
     from PyQt5.QtWidgets import qApp
@@ -160,8 +159,7 @@ def exceptionHandler(exType, exValue, exTrace):
 
         errMsg = NWErrorMessage(nwGUI)
         errMsg.setMessage(exType, exValue, exTrace)
-        if nw.CONFIG.showGUI:
-            errMsg.exec_()
+        errMsg.exec_()
 
         try:
             # Try a controlled shudown
diff --git a/tests/test_base_error.py b/tests/test_base_error.py
index 540b51f0..472faaa2 100644
--- a/tests/test_base_error.py
+++ b/tests/test_base_error.py
@@ -66,33 +66,29 @@ def testBaseError_Handler(qtbot, monkeypatch, fncDir, tmpDir):
     qtbot.waitForWindowShown(nwGUI)
 
     # Normal shutdown
-    monkeypatch.setattr("PyQt5.QtWidgets.qApp.exit", lambda x: None)
-    nwGUI.mainConf.showGUI = True
-    exceptionHandler(Exception, "Error Message", None)
-    nwGUI.mainConf.showGUI = False
-    monkeypatch.undo()
-
-    # Disable blocking of GUI
-    monkeypatch.setattr("PyQt5.QtWidgets.QDialog.exec_", lambda: None)
-    monkeypatch.setattr("PyQt5.QtWidgets.qApp.exit", lambda x: None)
-    exceptionHandler(Exception, "Error Message", None)
-    monkeypatch.undo()
-
-    # Should handle qApp failing
-    monkeypatch.setattr("PyQt5.QtWidgets.qApp.topLevelWidgets", causeException)
-    monkeypatch.setattr("PyQt5.QtWidgets.qApp.exit", lambda x: None)
-    exceptionHandler(Exception, "Error Message", None)
-    monkeypatch.undo()
-
-    # Should handle failing to close main GUI
-    monkeypatch.setattr(nwGUI, "closeMain", causeException)
-    monkeypatch.setattr("PyQt5.QtWidgets.qApp.exit", lambda x: None)
+    monkeypatch.setattr(NWErrorMessage, "exec_", lambda *args: None)
+    monkeypatch.setattr("PyQt5.QtWidgets.qApp.exit", lambda *args: None)
     exceptionHandler(Exception, "Error Message", None)
     monkeypatch.undo()
 
     # Should not crash when no GUI is found
+    monkeypatch.setattr(NWErrorMessage, "exec_", lambda *args: None)
+    monkeypatch.setattr("PyQt5.QtWidgets.qApp.exit", lambda *args: None)
     monkeypatch.setattr("PyQt5.QtWidgets.qApp.topLevelWidgets", lambda: [])
-    monkeypatch.setattr("PyQt5.QtWidgets.qApp.exit", lambda x: None)
+    exceptionHandler(Exception, "Error Message", None)
+    monkeypatch.undo()
+
+    # Should handle qApp failing
+    monkeypatch.setattr(NWErrorMessage, "exec_", lambda *args: None)
+    monkeypatch.setattr("PyQt5.QtWidgets.qApp.exit", lambda *args: None)
+    monkeypatch.setattr("PyQt5.QtWidgets.qApp.topLevelWidgets", causeException)
+    exceptionHandler(Exception, "Error Message", None)
+    monkeypatch.undo()
+
+    # Should handle failing to close main GUI
+    monkeypatch.setattr(NWErrorMessage, "exec_", lambda *args: None)
+    monkeypatch.setattr("PyQt5.QtWidgets.qApp.exit", lambda *args: None)
+    monkeypatch.setattr(nwGUI, "closeMain", causeException)
     exceptionHandler(Exception, "Error Message", None)
     monkeypatch.undo()