diff --git a/packages/nodes-base/nodes/HttpRequest.node.ts b/packages/nodes-base/nodes/HttpRequest.node.ts
index ae26e3dd9..7e4292e6c 100644
--- a/packages/nodes-base/nodes/HttpRequest.node.ts
+++ b/packages/nodes-base/nodes/HttpRequest.node.ts
@@ -811,8 +811,23 @@ export class HttpRequest implements INodeType {
 						// @ts-ignore
 						requestOptions[optionName] = {};
 						for (const parameterData of setUiParameter!.parameter as IDataObject[]) {
-							// @ts-ignore
-							requestOptions[optionName][parameterData!.name as string] = parameterData!.value;
+							const parameterDataName = parameterData!.name as string;
+							const newValue = parameterData!.value;
+							if (optionName === 'qs') {
+								const computeNewValue = (oldValue: unknown) => {
+									if (typeof oldValue === 'string') {
+										return [oldValue, newValue];
+									} else if (Array.isArray(oldValue)) {
+										return [...oldValue, newValue];
+									} else {
+										return newValue;
+									}
+								};
+								requestOptions[optionName][parameterDataName] = computeNewValue(requestOptions[optionName][parameterDataName]);
+							} else {
+								// @ts-ignore
+								requestOptions[optionName][parameterDataName] = newValue;
+							}
 						}
 					}
 				}