diff --git a/src/protocol/eval.rs b/src/protocol/eval.rs
index 06b0c137d25ca05383402156ffbd8f00b0543e45..a7c48c03b853995812717b481c17f850ca2d9b5d 100644
--- a/src/protocol/eval.rs
+++ b/src/protocol/eval.rs
@@ -1611,7 +1611,7 @@ pub enum EvalContinuation {
 }
 
 #[derive(Debug, Clone, serde::Serialize, serde::Deserialize)]
-pub struct Prompt {
+pub(crate) struct Prompt {
     definition: DefinitionId,
     store: Store,
     position: Option<StatementId>,