diff --git a/internal/recommendation/home_integration_test.go b/internal/recommendation/home_integration_test.go
index d2de02d5..219dadfe 100644
--- a/internal/recommendation/home_integration_test.go
+++ b/internal/recommendation/home_integration_test.go
@@ -39,7 +39,7 @@ func TestHomeData_NewUser_AllSectionsEmpty(t *testing.T) {
 // Compile-time assert that pgtype.UUID is a valid map key — used by the
 // service when de-duping rediscover fallback rows. If this changes, the
 // service needs to switch to keying by string.
-var _ = func() pgtype.UUID { return pgtype.UUID{} }
+var _ map[pgtype.UUID]struct{}
 
 func TestHomeData_RecentlyAdded_OrderedByCreatedAt(t *testing.T) {
 	pool := newPool(t)