diff --git a/v5/patch_test.go b/v5/patch_test.go
index fbcb5ae..20d90cd 100644
--- a/v5/patch_test.go
+++ b/v5/patch_test.go
@@ -578,6 +578,13 @@ var Cases = []Case{
 		false,
 		false,
 	},
+	{
+		`{}`,
+		`[{"op": "replace", "path": "", "value": null}]`,
+		`null`,
+		false,
+		false,
+	},
 }
 
 type BadCase struct {
@@ -732,6 +739,11 @@ var BadCases = []BadCase{
 		`[{"op": "replace", "path": "/foo/bar", "value": null}, {"op": "add", "path": "/foo/bar/0", "value": "blah"}]`,
 		false,
 	},
+	{
+		`{}`,
+		`[{"op": "replace", "path": ""}]`,
+		true,
+	},
 }
 
 // This is not thread safe, so we cannot run patch tests in parallel.