diff --git a/CHANGELOG.md b/CHANGELOG.md
index 835985ba..2724ce5b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,6 +14,7 @@
 - Command line interface: Providing no input path
 - Scenario fails to be opened, if any of the dynamic obstacles does not contain a prediction
 - GUI: wrong usage of button
+- Check for qt6 so that map conversions work under Ubuntu 20.04
 
 ## [0.8.2] - 2024-07-22
 
diff --git a/crdesigner/ui/gui/utilities/errors.py b/crdesigner/ui/gui/utilities/errors.py
index 6f917056..4b316c67 100644
--- a/crdesigner/ui/gui/utilities/errors.py
+++ b/crdesigner/ui/gui/utilities/errors.py
@@ -1,31 +1,26 @@
-try:
-    # required for Ubuntu 20.04 since there a system library is too old for pyqt6 and the import fails
-    # when not importing this, one can still use the map conversion
-    from PyQt6.QtWidgets import QMessageBox, QWidget
+from PyQt6.QtWidgets import QMessageBox, QWidget
 
-    pyqt_available = True
 
-    def _message(
-        widget: QWidget,
-        title: str,
-        text: str,
-        buttons=QMessageBox.StandardButton.Ok,
-        default_button=QMessageBox.StandardButton.Ok,
-    ) -> QMessageBox.StandardButton:
-        messagebox = QMessageBox()
-        reply = messagebox.warning(widget, title, text, buttons, default_button)
-        messagebox.close()
-        return reply
+def _message(
+    widget: QWidget,
+    title: str,
+    text: str,
+    buttons=QMessageBox.StandardButton.Ok,
+    default_button=QMessageBox.StandardButton.Ok,
+) -> QMessageBox.StandardButton:
+    messagebox = QMessageBox()
+    reply = messagebox.warning(widget, title, text, buttons, default_button)
+    messagebox.close()
+    return reply
 
-    def error(
-        widget: QWidget, text: str, buttons=QMessageBox.StandardButton.Ok, default_button=QMessageBox.StandardButton.Ok
-    ) -> QMessageBox.StandardButton:
-        return _message(widget, "Error", text, buttons, default_button)
 
-    def warning(
-        widget: QWidget, text: str, buttons=QMessageBox.StandardButton.Ok, default_button=QMessageBox.StandardButton.Ok
-    ) -> QMessageBox.StandardButton:
-        return _message(widget, "Warning", text, buttons, default_button)
+def error(
+    widget: QWidget, text: str, buttons=QMessageBox.StandardButton.Ok, default_button=QMessageBox.StandardButton.Ok
+) -> QMessageBox.StandardButton:
+    return _message(widget, "Error", text, buttons, default_button)
 
-except (ImportError, RuntimeError):
-    pyqt_available = False
+
+def warning(
+    widget: QWidget, text: str, buttons=QMessageBox.StandardButton.Ok, default_button=QMessageBox.StandardButton.Ok
+) -> QMessageBox.StandardButton:
+    return _message(widget, "Warning", text, buttons, default_button)