diff --git a/llama.h b/llama.h
index b9ee593ad..0de530d45 100644
--- a/llama.h
+++ b/llama.h
@@ -83,6 +83,7 @@ extern "C" {
         // context pointer passed to the progress callback
         void * progress_callback_user_data;
 
+        // Keep the booleans together to avoid misalignment during copy-by-value.
         bool low_vram;   // if true, reduce VRAM usage at the cost of performance
         bool f16_kv;     // use fp16 for KV cache
         bool logits_all; // the llama_eval() call computes all logits, not just the last one