diff --git a/src/modlunky2/levels/level_settings.py b/src/modlunky2/levels/level_settings.py
index aaaeb15a0..2ef2c0380 100644
--- a/src/modlunky2/levels/level_settings.py
+++ b/src/modlunky2/levels/level_settings.py
@@ -116,7 +116,7 @@ def clean_value(self):
 
         if self.name == "size":
             # The cast is for pylint, which doesn't recognize the narrowing of isinstance
-            value = tuple(cast(self.value, str).split())
+            value = tuple(cast(str, self.value).split())
             if len(value) != 2:
                 raise ValueError("Directive `size` expects 2 values.")
         elif self.name == "liquid_gravity":