diff --git a/schemas/ak-export.schema.json b/schemas/ak-export.schema.json
index 2ab8cf771645c831ba57ae9bf36d95d0b1882d0c..8ac634a1d623343b478075f8fd646be15a7054ea 100644
--- a/schemas/ak-export.schema.json
+++ b/schemas/ak-export.schema.json
@@ -1,7 +1,6 @@
 {
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "$id": "schemas/ak-export.schema.json",
-  "allOf": [{ "$ref": "ak.schema.json" }],
   "properties": {
     "info": {"unevaluatedProperties": false}
   }
diff --git a/schemas/participant-export.schema.json b/schemas/participant-export.schema.json
index 935b2188ee81872f91a1c53c0dfc139af6bc17c0..4c525f50006d63baab35e20155bd9fc82cfe1c37 100644
--- a/schemas/participant-export.schema.json
+++ b/schemas/participant-export.schema.json
@@ -2,7 +2,6 @@
 {
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "$id": "schemas/participant-export.schema.json",
-  "allOf": [{ "$ref": "participant.schema.json" }],
   "properties": {
     "preferences": {
         "items": {
diff --git a/schemas/room-export.schema.json b/schemas/room-export.schema.json
index bc14670a236e461861e656d06bc638ba3f0e034e..ea709cffcbdffe117e7eb3952d0f536abdcc3db6 100644
--- a/schemas/room-export.schema.json
+++ b/schemas/room-export.schema.json
@@ -1,7 +1,6 @@
 {
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "$id": "schemas/room-export.schema.json",
-  "allOf": [{ "$ref": "room.schema.json" }],
   "properties": {
     "info": {"unevaluatedProperties": false}
   }
diff --git a/schemas/timeslot-export.schema.json b/schemas/timeslot-export.schema.json
index d0bef1249746910ca0638b90c8face56cc4656b2..5cce634ccb66e4892250a2278c5b562c374a0d7c 100644
--- a/schemas/timeslot-export.schema.json
+++ b/schemas/timeslot-export.schema.json
@@ -1,7 +1,6 @@
 {
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "$id": "schemas/timeslot-export.schema.json",
-  "allOf": [{ "$ref": "timeslot.schema.json" }],
   "properties": {
     "info": {"unevaluatedProperties": false},
     "blocks": {