diff --git a/packages/workflow/src/Expression.ts b/packages/workflow/src/Expression.ts
index 4df397c6da..e25b0b104f 100644
--- a/packages/workflow/src/Expression.ts
+++ b/packages/workflow/src/Expression.ts
@@ -205,6 +205,8 @@ export class Expression {
 			}
 
 			return returnData as NodeParameterValue[] | INodeParameters[];
+		} else if (parameterValue === null) {
+			return parameterValue;
 		} else {
 			// Data is an object
 			const returnData: INodeParameters = {};