diff --git a/api/src/engine/models/experiment/input/experiment-create.input.ts b/api/src/engine/models/experiment/input/experiment-create.input.ts
index d52a179b876d842991be5f399c84da22f5ed4feb..a34bb4c8a28c2ee456a6e88f44cdc6a87f4cd059 100644
--- a/api/src/engine/models/experiment/input/experiment-create.input.ts
+++ b/api/src/engine/models/experiment/input/experiment-create.input.ts
@@ -34,8 +34,8 @@ export class ExperimentCreateInput {
   name: string;
 
   @Field(() => [FormulaTransformation], { nullable: true })
-  transformations: FormulaTransformation[];
+  transformations?: FormulaTransformation[];
 
   @Field(() => [[String]], { nullable: true })
-  interactions: string[][];
+  interactions?: string[][];
 }