diff --git a/llama_toolchain/agentic_system/meta_reference/system_prompt.py b/llama_toolchain/agentic_system/meta_reference/system_prompt.py
index f5792d22b..d3b5b45d7 100644
--- a/llama_toolchain/agentic_system/meta_reference/system_prompt.py
+++ b/llama_toolchain/agentic_system/meta_reference/system_prompt.py
@@ -80,7 +80,7 @@ def prompt_for_json(custom_tools: List[ToolDefinition]) -> str:
         Here is a list of functions in JSON format:
         {tool_defs}
 
-        Return function calls in json format.
+        Return function calls in JSON format.
         """
     )
     content = content.lstrip("\n").format(tool_defs=tool_defs)