diff --git a/spring-ai-docs/src/main/antora/modules/ROOT/pages/api/chat/functions/vertexai-gemini-chat-functions.adoc b/spring-ai-docs/src/main/antora/modules/ROOT/pages/api/chat/functions/vertexai-gemini-chat-functions.adoc
index b4aec52ca95..5c2db13dfd5 100644
--- a/spring-ai-docs/src/main/antora/modules/ROOT/pages/api/chat/functions/vertexai-gemini-chat-functions.adoc
+++ b/spring-ai-docs/src/main/antora/modules/ROOT/pages/api/chat/functions/vertexai-gemini-chat-functions.adoc
@@ -132,7 +132,7 @@ static class Config {
 		return FunctionCallbackWrapper.builder(new MockWeatherService())
 			.withName("CurrentWeather") // (1) function name
 			.withDescription("Get the current weather in a given location") // (2) function description
-			.withSchemaType(SchemaType.OPEN_API) // (3) schema type. Compulsory for Gemini function calling.
+			.withSchemaType(SchemaType.OPEN_API_SCHEMA) // (3) schema type. Compulsory for Gemini function calling.
 			.build();
 	}
 	...