diff --git a/api/client-server/v2_alpha/definitions/event_filter.json b/api/client-server/v2_alpha/definitions/event_filter.json
index 269bb5f0..1cdcb1f4 100644
--- a/api/client-server/v2_alpha/definitions/event_filter.json
+++ b/api/client-server/v2_alpha/definitions/event_filter.json
@@ -9,7 +9,7 @@
     "types": {
       "type": "array",
       "description":
-        "A list of event types to include. If this list is absent then all event types are included.",
+        "A list of event types to include. If this list is absent then all event types are included. A '*' can be used as a wildcard to match any sequence of characters.",
       "items": {
         "type": "string"
       }
@@ -17,7 +17,7 @@
     "not_types": {
       "type": "array",
       "description":
-        "A list of event types to exclude. If this list is absent then no event types are excluded. A matching type will be excluded even if it is listed in the 'types' filter",
+        "A list of event types to exclude. If this list is absent then no event types are excluded. A matching type will be excluded even if it is listed in the 'types' filter. A '*' can be used as a wildcard to match any sequence of characters.",
       "items": {
         "type": "string"
       }
@@ -25,7 +25,7 @@
     "senders": {
       "type": "array",
       "description":
-        "A list of senders IDs to include. If this list is absent then all senders are included.",
+        "A list of senders IDs to include. If this list is absent then all senders are included. A '*' can be used as a wildcard to match any sequence of characters.",
       "items": {
         "type": "string"
       }
@@ -33,7 +33,7 @@
     "not_senders": {
       "type": "array",
       "description":
-        "A list of sender IDs to exclude. If this list is absent then no senders are excluded. A matching sender will be excluded even if it is listed in the 'senders' filter",
+        "A list of sender IDs to exclude. If this list is absent then no senders are excluded. A matching sender will be excluded even if it is listed in the 'senders' filter. A '*' can be used as a wildcard to match any sequence of characters.",
       "items": {
         "type": "string"
       }
diff --git a/api/client-server/v2_alpha/definitions/room_event_filter.json b/api/client-server/v2_alpha/definitions/room_event_filter.json
index 5be0fcd2..86375781 100644
--- a/api/client-server/v2_alpha/definitions/room_event_filter.json
+++ b/api/client-server/v2_alpha/definitions/room_event_filter.json
@@ -5,7 +5,7 @@
     "rooms": {
       "type": "array",
       "description":
-        "A list of room IDs to include. If this list is absent then all rooms are included.",
+        "A list of room IDs to include. If this list is absent then all rooms are included. A '*' can be used as a wildcard to match any sequence of characters.",
       "items": {
         "type": "string"
       }
@@ -13,7 +13,7 @@
     "not_rooms": {
       "type": "array",
       "description":
-        "A list of room IDs to exclude. If this list is absent then no rooms are excluded. A matching room will be excluded even if it is listed in the 'rooms' filter",
+        "A list of room IDs to exclude. If this list is absent then no rooms are excluded. A matching room will be excluded even if it is listed in the 'rooms' filter. A '*' can be used as a wildcard to match any sequence of characters.",
       "items": {
         "type": "string"
       }