diff --git a/event-schemas/schema/v1/m.call.answer b/event-schemas/schema/v1/m.call.answer
index 7baaaf7f..ea561483 100644
--- a/event-schemas/schema/v1/m.call.answer
+++ b/event-schemas/schema/v1/m.call.answer
@@ -14,7 +14,7 @@
                 },
                 "answer": {
                     "type": "object",
-                    "description": "",
+                    "description": "The session description object",
                     "properties": {
                         "type": {
                             "type": "string",
diff --git a/event-schemas/schema/v1/m.call.candidates b/event-schemas/schema/v1/m.call.candidates
index 93c024ee..185dd267 100644
--- a/event-schemas/schema/v1/m.call.candidates
+++ b/event-schemas/schema/v1/m.call.candidates
@@ -1,6 +1,7 @@
 {
     "$schema": "http://json-schema.org/draft-04/schema#",
     "type": "object",
+    "description": "This event is sent by callers after sending an invite and by the callee after answering. Its purpose is to give the other party additional ICE candidates to try using to communicate.",
     "allOf": [{
         "$ref": "core#/definitions/room_event"
     }],
diff --git a/event-schemas/schema/v1/m.call.invite b/event-schemas/schema/v1/m.call.invite
index a2aa98a3..44f998f1 100644
--- a/event-schemas/schema/v1/m.call.invite
+++ b/event-schemas/schema/v1/m.call.invite
@@ -1,6 +1,7 @@
 {
     "$schema": "http://json-schema.org/draft-04/schema#",
     "type": "object",
+    "description": "This event is sent by the caller when they wish to establish a call.",
     "allOf": [{
         "$ref": "core#/definitions/room_event"
     }],