diff --git a/objects/email/definition.json b/objects/email/definition.json
index ca721c4..72af3a0 100644
--- a/objects/email/definition.json
+++ b/objects/email/definition.json
@@ -1,7 +1,7 @@
 {
   "name": "email",
   "uuid": "a0c666e0-fc65-4be8-b48f-3423d788b552",
-  "meta-category": "email",
+  "meta-category": "network",
   "description": "Email object describing an email with meta-information",
   "version": 1,
   "attributes": {
diff --git a/objects/geolocation/definition.json b/objects/geolocation/definition.json
index 171eefe..9de4fa9 100644
--- a/objects/geolocation/definition.json
+++ b/objects/geolocation/definition.json
@@ -60,7 +60,7 @@
   },
   "version": 1,
   "description": "An object to describe a geographic location.",
-  "meta-category": "location",
+  "meta-category": "misc",
   "uuid": "fdd30d5f-6752-45ed-bef2-25e8ce4d8a3",
   "name": "geolocation"
 }
diff --git a/schema.json b/schema.json
index 9382fc5..ca25ba7 100644
--- a/schema.json
+++ b/schema.json
@@ -57,7 +57,14 @@
   "additionalProperties": false,
   "properties": {
     "meta-category": {
-      "type": "string"
+      "type": "string",
+      "enum": [
+        "file",
+        "network",
+        "financial",
+        "misc",
+        "internal"
+      ]
     },
     "name": {
       "type": "string"