diff --git a/schemas/schema.json b/schemas/schema.json
index aab3cff..8dc0b7b 100644
--- a/schemas/schema.json
+++ b/schemas/schema.json
@@ -9,7 +9,7 @@
         "^COPY$": {
           "$ref": "#/definitions/TranslationWrapper"
         },
-        "^(?!COPY|ACCESSIBILITY).*$": {
+        "^(?!COPY|ACCESSIBILITY)\\D.*$": {
           "$ref": "#/definitions/Node"
         }
       },
diff --git a/tests/actions/validate.test.js b/tests/actions/validate.test.js
index e091229..010132d 100644
--- a/tests/actions/validate.test.js
+++ b/tests/actions/validate.test.js
@@ -50,3 +50,10 @@ test("validating fails when there's a collection requested that doesn't exist in
   );
   expect(res.isError).toBe(true);
 });
+
+test("validating fails when there's a key that starts with a digit", () => {
+  const res = loadYaml("tests/input/localicipe_invalid_key.yaml").flatMap(data =>
+    validate(data, ["en"], undefined, ["COLLECTION"])
+  );
+  expect(res.isError).toBe(true);
+});
diff --git a/tests/input/localicipe_invalid_key.yaml b/tests/input/localicipe_invalid_key.yaml
new file mode 100644
index 0000000..aded0ac
--- /dev/null
+++ b/tests/input/localicipe_invalid_key.yaml
@@ -0,0 +1,7 @@
+COLLECTION:
+  Checkout:
+    1KeyStartingWithADigit:
+      Total:
+        COPY:
+          en: 'This is copy'
+    
\ No newline at end of file