diff --git a/spring-ai-model/src/main/java/org/springframework/ai/chat/metadata/ChatGenerationMetadata.java b/spring-ai-model/src/main/java/org/springframework/ai/chat/metadata/ChatGenerationMetadata.java
index 8e1525cb192..2ee76319082 100644
--- a/spring-ai-model/src/main/java/org/springframework/ai/chat/metadata/ChatGenerationMetadata.java
+++ b/spring-ai-model/src/main/java/org/springframework/ai/chat/metadata/ChatGenerationMetadata.java
@@ -67,7 +67,7 @@ public interface Builder {
 		/**
 		 * Set the reason this choice completed for the generation.
 		 */
-		Builder finishReason(String id);
+		Builder finishReason(String finishReason);
 
 		/**
 		 * Add metadata to the Generation result.