diff --git a/mikeio/pfs/_pfsdocument.py b/mikeio/pfs/_pfsdocument.py
index 0a5df1a6d..a98f45b1c 100644
--- a/mikeio/pfs/_pfsdocument.py
+++ b/mikeio/pfs/_pfsdocument.py
@@ -348,7 +348,8 @@ def _parse_line(self, line: str, level: int = 0) -> tuple[str, int]:
     def _parse_param(self, value: str) -> str:
         if len(value) == 0:
             return "[]"
-
+        if "MULTIPOLYGON" in value:
+            return value
         if "," in value:
             tokens = self._split_line_by_comma(value)
             for j in range(len(tokens)):