diff --git a/compiler/parse/src/ast.rs b/compiler/parse/src/ast.rs
index dedde5f818..936842fc4a 100644
--- a/compiler/parse/src/ast.rs
+++ b/compiler/parse/src/ast.rs
@@ -273,7 +273,7 @@ pub enum Has<'a> {
 /// An ability demand is a value defining the ability; for example `hash : a -> U64 | a has Hash`
 /// for a `Hash` ability.
 #[derive(Debug, Clone, Copy, PartialEq)]
-pub struct AbilityDemand<'a> {
+pub struct AbilityMember<'a> {
     pub name: Loc<Spaced<'a, &'a str>>,
     pub typ: Loc<TypeAnnotation<'a>>,
 }
@@ -305,7 +305,7 @@ pub enum Def<'a> {
     Ability {
         header: TypeHeader<'a>,
         loc_has: Loc<Has<'a>>,
-        demands: &'a [AbilityDemand<'a>],
+        members: &'a [AbilityMember<'a>],
     },
 
     // TODO in canonicalization, check to see if there are any newlines after the
diff --git a/compiler/parse/src/expr.rs b/compiler/parse/src/expr.rs
index 1a5b8be89b..0663ee3496 100644
--- a/compiler/parse/src/expr.rs
+++ b/compiler/parse/src/expr.rs
@@ -1074,14 +1074,14 @@ fn finish_parsing_alias_or_opaque<'a>(
 mod ability {
     use super::*;
     use crate::{
-        ast::{AbilityDemand, Spaceable, Spaced},
+        ast::{AbilityMember, Spaceable, Spaced},
         parser::EAbility,
     };
 
     /// Parses a single ability demand line; see `parse_demand`.
     fn parse_demand_help<'a>(
         start_column: u32,
-    ) -> impl Parser<'a, AbilityDemand<'a>, EAbility<'a>> {
+    ) -> impl Parser<'a, AbilityMember<'a>, EAbility<'a>> {
         map!(
             and!(
                 specialize(|_, pos| EAbility::DemandName(pos), loc!(lowercase_ident())),
@@ -1099,7 +1099,7 @@ mod ability {
                 )
             ),
             |(name, typ): (Loc<&'a str>, Loc<TypeAnnotation<'a>>)| {
-                AbilityDemand {
+                AbilityMember {
                     name: name.map_owned(Spaced::Item),
                     typ,
                 }
@@ -1117,7 +1117,7 @@ mod ability {
     /// This is basically the same as parsing a free-floating annotation, but with stricter rules.
     pub fn parse_demand<'a>(
         indent: IndentLevel,
-    ) -> impl Parser<'a, (u32, AbilityDemand<'a>), EAbility<'a>> {
+    ) -> impl Parser<'a, (u32, AbilityMember<'a>), EAbility<'a>> {
         move |arena, state: State<'a>| {
             let initial = state.clone();
 
diff --git a/compiler/parse/tests/snapshots/pass/ability_demand_signature_is_multiline.expr.result-ast b/compiler/parse/tests/snapshots/pass/ability_demand_signature_is_multiline.expr.result-ast
index cd75525ef6..c5a2217c99 100644
--- a/compiler/parse/tests/snapshots/pass/ability_demand_signature_is_multiline.expr.result-ast
+++ b/compiler/parse/tests/snapshots/pass/ability_demand_signature_is_multiline.expr.result-ast
@@ -6,8 +6,8 @@ Defs(
                 vars: [],
             },
             loc_has: @5-8 Has,
-            demands: [
-                AbilityDemand {
+            members: [
+                AbilityMember {
                     name: @11-15 SpaceBefore(
                         "hash",
                         [
diff --git a/compiler/parse/tests/snapshots/pass/ability_multi_line.expr.result-ast b/compiler/parse/tests/snapshots/pass/ability_multi_line.expr.result-ast
index 0ad5d314f4..01dd4bbed5 100644
--- a/compiler/parse/tests/snapshots/pass/ability_multi_line.expr.result-ast
+++ b/compiler/parse/tests/snapshots/pass/ability_multi_line.expr.result-ast
@@ -6,8 +6,8 @@ Defs(
                 vars: [],
             },
             loc_has: @5-8 Has,
-            demands: [
-                AbilityDemand {
+            members: [
+                AbilityMember {
                     name: @11-15 SpaceBefore(
                         "hash",
                         [
@@ -27,7 +27,7 @@ Defs(
                         ),
                     ),
                 },
-                AbilityDemand {
+                AbilityMember {
                     name: @29-34 SpaceBefore(
                         "hash2",
                         [