diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6bce35a8..83f041f3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@
 * Added a warning when building binary place files, since they're still experimental and have bugs.
 * Added a warning when trying to use Rojo 0.5.x with a Rojo 0.4.x-only project.
 * Added a warning when a Rojo project contains keys that start with `$`, which are reserved names. ([#191](https://github.com/LPGhatguy/rojo/issues/191))
+* Rojo now throws an error if unknown keys are found in the project file.
 * Added an icon to the plugin's toolbar button
 * Changed the plugin to use a docking widget for all UI.
 * Changed the plugin to ignore unknown properties when live-syncing.
diff --git a/test-projects/legacy-0.5.x-unknown-names/default.project.json b/test-projects/legacy-0.5.x-unknown-names/default.project.json
new file mode 100644
index 00000000..3c784f36
--- /dev/null
+++ b/test-projects/legacy-0.5.x-unknown-names/default.project.json
@@ -0,0 +1,7 @@
+{
+  "name": "legacy-0.5.x-reserved-names",
+  "tree": {
+    "$className": "Folder"
+  },
+  "some field Rojo doesn't have": true
+}
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