diff --git a/lib/invoice-parser.test.ts b/lib/invoice-parser.test.ts
index 9430508..5aeab40 100644
--- a/lib/invoice-parser.test.ts
+++ b/lib/invoice-parser.test.ts
@@ -280,3 +280,17 @@ test("folding never invents a site or splits a different one", () => {
   assert.equal(resolveSiteName("Cosmo City Extension", known), "Cosmo City Extension");
   assert.equal(resolveSiteName("Cosmo City North", known), "Cosmo City North");
 });
+
+test("a site typed without its space is NOT folded — that would merge two real sites", () => {
+  // PHI 180 prints "Westpark" where the register says "West Park", so this looks like a
+  // spacing typo worth folding. It is deliberately left alone: the register ALSO carries
+  // both "Autumns Gate" and "Autumnsgate", and a spacing-insensitive rule cannot tell a
+  // typo from two genuinely different places — it would silently merge that pair.
+  //
+  // PHI 180's stored name was corrected to "West Park" by hand instead. Merging the two
+  // Autumn sites is the client's call, not a side effect of a re-import.
+  const known = ["West Park", "Autumns Gate", "Autumnsgate"];
+  assert.equal(resolveSiteName("Westpark", known), "Westpark");
+  assert.equal(resolveSiteName("Autumnsgate", known), "Autumnsgate");
+  assert.equal(resolveSiteName("Autumns Gate", known), "Autumns Gate");
+});