diff --git a/src/ifcopenshell-python/ifcopenshell/simple_spf b/src/ifcopenshell-python/ifcopenshell/simple_spf
index ed50b756c4..9400d243d8 160000
--- a/src/ifcopenshell-python/ifcopenshell/simple_spf
+++ b/src/ifcopenshell-python/ifcopenshell/simple_spf
@@ -1 +1 @@
-Subproject commit ed50b756c4035290d50eb2d928f89423f3aa0947
+Subproject commit 9400d243d880dace57490949d74ab1932ce99a09