diff --git a/spaces/S000108/properties/P000081.md b/spaces/S000108/properties/P000081.md
new file mode 100644
index 000000000..66952e65d
--- /dev/null
+++ b/spaces/S000108/properties/P000081.md
@@ -0,0 +1,7 @@
+---
+space: S000108
+property: P000081
+value: false
+---
+
+It has {S109} as a subspace and {S109|P81}. 
diff --git a/spaces/S000108/properties/P000197.md b/spaces/S000108/properties/P000197.md
deleted file mode 100644
index 748858c2a..000000000
--- a/spaces/S000108/properties/P000197.md
+++ /dev/null
@@ -1,7 +0,0 @@
----
-space: S000108
-property: P000197
-value: false
----
-
-It has {S109} as a subspace and {S109|P197}.
diff --git a/spaces/S000109/properties/P000081.md b/spaces/S000109/properties/P000081.md
new file mode 100644
index 000000000..145ab2a6d
--- /dev/null
+++ b/spaces/S000109/properties/P000081.md
@@ -0,0 +1,10 @@
+---
+space: S000109
+property: P000081
+value: false
+refs:
+  - mo: 505981
+    name: Tightness of Novak space
+---
+
+$X$ has uncountable tightness, see {{mo:505981}}.