diff --git a/capellambse/_namespaces.py b/capellambse/_namespaces.py
index ebc7f85f4..7f47e1436 100644
--- a/capellambse/_namespaces.py
+++ b/capellambse/_namespaces.py
@@ -78,15 +78,14 @@ def __str__(self) -> str:
         return self.name
 
     def __repr__(self) -> str:
-        if len(_values := list(self._values)) > 2:
-            name, minv, maxv = _values
-            values = [name, f"[{minv}|{maxv}]"]
+        if isinstance(self.version, tuple):
+            minv, maxv = self.version
+            values = [self.name, f"[{minv}|{maxv}]"]
         else:
-            name, version = _values
-            values = [name]
-            if version is not None:
-                values.append(version)
-        return "".join(values)  # type: ignore[arg-type]
+            values = [self.name]
+            if self.version is not None:
+                values.append(self.version)
+        return "".join(values)
 
 
 def _tofloat(other: str) -> float:
diff --git a/capellambse/aird/_common.py b/capellambse/aird/_common.py
index d6144cb3d..8153f9e7f 100644
--- a/capellambse/aird/_common.py
+++ b/capellambse/aird/_common.py
@@ -74,7 +74,7 @@ class StackingBox(diagram.Box):
 
     CHILD_MARGIN = 0
 
-    children: StackingBox._StackingChildren  # type: ignore[name-defined]
+    children: _StackingChildren
     __features: cabc.MutableSequence[str] | None
 
     def __init__(
diff --git a/capellambse/cli_helpers.py b/capellambse/cli_helpers.py
index 502f03a8c..a62cb36e6 100644
--- a/capellambse/cli_helpers.py
+++ b/capellambse/cli_helpers.py
@@ -86,14 +86,15 @@ def convert(self, value: t.Any, param, ctx) -> dict[str, t.Any]:
                 assert False
 
 except ImportError:
+    if not t.TYPE_CHECKING:
 
-    def ModelCLI(*__, **_):  # type: ignore[no-redef]
-        """Raise a dependency error."""
-        raise RuntimeError("click is not installed")
+        def ModelCLI(*__, **_):
+            """Raise a dependency error."""
+            raise RuntimeError("click is not installed")
 
-    def ModelInfoCLI(*__, **_):  # type: ignore[no-redef]
-        """Raise a dependency error."""
-        raise RuntimeError("click is not installed")
+        def ModelInfoCLI(*__, **_):
+            """Raise a dependency error."""
+            raise RuntimeError("click is not installed")
 
 
 def enumerate_known_models() -> cabc.Iterator[importlib.abc.Traversable]: