diff --git a/src/protocol/parser/visitor.rs b/src/protocol/parser/visitor.rs
index 3d62f1c603b4b29b8d640dee5b355d8186fc3383..ad92f4dd13b1a946e00f40c5aabed836c76e5938 100644
--- a/src/protocol/parser/visitor.rs
+++ b/src/protocol/parser/visitor.rs
@@ -6,8 +6,10 @@ use crate::protocol::symbol_table::{SymbolTable};
 type Unit = ();
 pub(crate) type VisitorResult = Result<Unit, ParseError>;
 
-/// Globally configured vector capacity for buffers in visitor implementations
-pub(crate) const BUFFER_INIT_CAPACITY: usize = 256;
+/// Globally configured capacity for large-ish buffers in visitor impls
+pub(crate) const BUFFER_INIT_CAP_LARGE: usize = 256;
+/// Globally configured capacity for small-ish buffers in visitor impls
+pub(crate) const BUFFER_INIT_CAP_SMALL: usize = 64;
 
 /// General context structure that is used while traversing the AST.
 pub(crate) struct Ctx<'p> {