diff --git a/packages/core/src/Interfaces.ts b/packages/core/src/Interfaces.ts
index 70f6c7063e..1e0ad62bbe 100644
--- a/packages/core/src/Interfaces.ts
+++ b/packages/core/src/Interfaces.ts
@@ -73,6 +73,7 @@ export interface IExecuteFunctions extends IExecuteFunctionsBase {
 
 export interface IExecuteSingleFunctions extends IExecuteSingleFunctionsBase {
 	helpers: {
+		getBinaryDataBuffer(propertyName: string, inputIndex?: number): Promise<Buffer>;
 		httpRequest(requestOptions: IHttpRequestOptions): Promise<any>; // tslint:disable-line:no-any
 		prepareBinaryData(
 			binaryData: Buffer,
diff --git a/packages/core/src/NodeExecuteFunctions.ts b/packages/core/src/NodeExecuteFunctions.ts
index 8542a8815d..b5aeeb75c1 100644
--- a/packages/core/src/NodeExecuteFunctions.ts
+++ b/packages/core/src/NodeExecuteFunctions.ts
@@ -2385,6 +2385,9 @@ export function getExecuteSingleFunctions(
 				return workflow.getStaticData(type, node);
 			},
 			helpers: {
+				async getBinaryDataBuffer(propertyName: string, inputIndex = 0): Promise<Buffer> {
+					return getBinaryDataBuffer.call(this, inputData, itemIndex, propertyName, inputIndex);
+				},
 				httpRequest,
 				async requestWithAuthentication(
 					this: IAllExecuteFunctions,