diff --git a/src/ast/expr.rs b/src/ast/expr.rs
index 2f96af59..1896f0df 100644
--- a/src/ast/expr.rs
+++ b/src/ast/expr.rs
@@ -276,9 +276,9 @@ pub enum Expr {
     /// [String][ImmutableString] constant.
     StringConstant(ImmutableString, Position),
     /// An interpolated [string][ImmutableString].
-    InterpolatedString(Box<StaticVec<Expr>>, Position),
+    InterpolatedString(Box<FnArgsVec<Expr>>, Position),
     /// [ expr, ... ]
-    Array(Box<StaticVec<Expr>>, Position),
+    Array(Box<FnArgsVec<Expr>>, Position),
     /// #{ name:expr, ... }
     Map(
         Box<(StaticVec<(Ident, Expr)>, BTreeMap<Identifier, Dynamic>)>,
diff --git a/src/parser.rs b/src/parser.rs
index 37c13265..d7518138 100644
--- a/src/parser.rs
+++ b/src/parser.rs
@@ -908,7 +908,7 @@ impl Engine {
         let mut settings = settings;
         settings.pos = eat_token(input, Token::LeftBracket);
 
-        let mut array = StaticVec::new_const();
+        let mut array = FnArgsVec::new_const();
 
         loop {
             const MISSING_RBRACKET: &str = "to end this array literal";
@@ -1501,7 +1501,7 @@ impl Engine {
 
             // Interpolated string
             Token::InterpolatedString(..) => {
-                let mut segments = StaticVec::<Expr>::new();
+                let mut segments = FnArgsVec::new_const();
                 let settings = settings.level_up()?;
 
                 match input.next().expect(NEVER_ENDS) {