diff --git a/spring-ai-model/src/main/java/org/springframework/ai/model/tool/DefaultToolCallingManager.java b/spring-ai-model/src/main/java/org/springframework/ai/model/tool/DefaultToolCallingManager.java
index 887ba56bb72..5149a98a85c 100644
--- a/spring-ai-model/src/main/java/org/springframework/ai/model/tool/DefaultToolCallingManager.java
+++ b/spring-ai-model/src/main/java/org/springframework/ai/model/tool/DefaultToolCallingManager.java
@@ -153,10 +153,6 @@ private static ToolContext buildToolContext(Prompt prompt, AssistantMessage assi
 				&& !CollectionUtils.isEmpty(toolCallingChatOptions.getToolContext())) {
 			toolContextMap = new HashMap<>(toolCallingChatOptions.getToolContext());
 
-			List<Message> messageHistory = new ArrayList<>(prompt.copy().getInstructions());
-			messageHistory.add(new AssistantMessage(assistantMessage.getText(), assistantMessage.getMetadata(),
-					assistantMessage.getToolCalls()));
-
 			toolContextMap.put(ToolContext.TOOL_CALL_HISTORY,
 					buildConversationHistoryBeforeToolExecution(prompt, assistantMessage));
 		}