diff --git a/packages/components/nodes/agents/OpenAIFunctionAgent/OpenAIFunctionAgent.ts b/packages/components/nodes/agents/OpenAIFunctionAgent/OpenAIFunctionAgent.ts
index 135121d2..c21c887a 100644
--- a/packages/components/nodes/agents/OpenAIFunctionAgent/OpenAIFunctionAgent.ts
+++ b/packages/components/nodes/agents/OpenAIFunctionAgent/OpenAIFunctionAgent.ts
@@ -112,7 +112,7 @@ const prepareAgent = (
     const inputKey = memory.inputKey ? memory.inputKey : 'input'
 
     const prompt = ChatPromptTemplate.fromMessages([
-        ['ai', systemMessage ? systemMessage : `You are a helpful AI assistant.`],
+        ['system', systemMessage ? systemMessage : `You are a helpful AI assistant.`],
         new MessagesPlaceholder(memoryKey),
         ['human', `{${inputKey}}`],
         new MessagesPlaceholder('agent_scratchpad')