diff --git a/inst/known_cases.json b/inst/known_cases.json
index 23550f1..25cf49b 100644
--- a/inst/known_cases.json
+++ b/inst/known_cases.json
@@ -9,7 +9,7 @@
   {
     "package": "base",
     "type": "read-only url connection",
-    "if_not_marshalled": "",
+    "if_not_marshalled": "error, incorrect result",
     "can_be_marshalled": true,
     "must_be_marshalled": true
   },
@@ -30,7 +30,7 @@
   {
     "package": "caret",
     "type": "train",
-    "if_not_marshalled": "",
+    "if_not_marshalled": "???",
     "can_be_marshalled": true,
     "must_be_marshalled": true
   },
@@ -44,7 +44,7 @@
   {
     "package": "data.table",
     "type": "data.table",
-    "if_not_marshalled": "",
+    "if_not_marshalled": "okay",
     "can_be_marshalled": true,
     "must_be_marshalled": false
   },
@@ -92,7 +92,7 @@
   },
   {
     "package": "parsnip",
-    "if_not_marshalled": "",
+    "if_not_marshalled": "???",
     "can_be_marshalled": true,
     "must_be_marshalled": true
   },
@@ -126,7 +126,7 @@
   {
     "package": "rstan",
     "type": "stanfit",
-    "if_not_marshalled": "",
+    "if_not_marshalled": "okay",
     "can_be_marshalled": true,
     "must_be_marshalled": false
   },
@@ -147,7 +147,7 @@
   {
     "package": "readr",
     "type": "data.frame, tbl_df with 'problems' attribute",
-    "if_not_marshalled": "",
+    "if_not_marshalled": "???",
     "can_be_marshalled": true,
     "must_be_marshalled": false
   },
diff --git a/vignettes/known_cases.Rmd b/vignettes/known_cases.Rmd
index a697fe4..7f71205 100644
--- a/vignettes/known_cases.Rmd
+++ b/vignettes/known_cases.Rmd
@@ -20,5 +20,6 @@ names <- gsub("_marshalled", "_marshalled?", names)
 names <- gsub("_", " ", names)
 names <- gsub("_", " ", names)
 colnames(support) <- names
+support <- with(support, support[order(tolower(package)), ])
 DT::datatable(support, options = list(pageLength = 50))
 ```