diff --git a/lib/src/revset.rs b/lib/src/revset.rs
index 172ec479b..7a20ac503 100644
--- a/lib/src/revset.rs
+++ b/lib/src/revset.rs
@@ -843,7 +843,7 @@ static BUILTIN_FUNCTION_MAP: Lazy<HashMap<&'static str, RevsetFunction>> = Lazy:
         // TODO: Remove in jj 0.28+
         if function.name != "conflicts" {
             diagnostics.add_warning(RevsetParseError::expression(
-                "file() is deprecated; use files() instead",
+                "conflict() is deprecated; use conflicts() instead",
                 function.name_span,
             ));
         }