diff --git a/core/quivr_core/rag/entities/config.py b/core/quivr_core/rag/entities/config.py
index cb455ab42d39..1e848bdcde61 100644
--- a/core/quivr_core/rag/entities/config.py
+++ b/core/quivr_core/rag/entities/config.py
@@ -230,6 +230,7 @@ def set_api_key(self, force_reset: bool = False):
 
         if not self.llm_api_key:
             logger.warning(f"The API key for supplier '{self.supplier}' is not set. ")
+            logger.warning(f"Please set the environment variable: '{self.env_variable_name}'. ")
 
     def set_llm_model_config(self):
         # Automatically set context_length and tokenizer_hub based on the supplier and model