diff --git a/core/dr-gpu/examples/frame_budget.rs b/core/dr-gpu/examples/frame_budget.rs
index 95c5d54..8040770 100644
--- a/core/dr-gpu/examples/frame_budget.rs
+++ b/core/dr-gpu/examples/frame_budget.rs
@@ -634,7 +634,10 @@ fn activate_everything(graph: &mut EditGraph, neighbourhood: bool) {
                     ParamKind::Bool => 1.0,
                     // The second variant when there is one. The first is the
                     // default by construction — see `ParamDescriptor::choice`.
-                    ParamKind::Enum { variants } => {
+                    // Bound by reference: a descriptor's variants became an
+                    // owned `Vec` when descriptors stopped being `&'static`,
+                    // and this arm only ever reads the length.
+                    ParamKind::Enum { ref variants } => {
                         if variants.len() > 1 {
                             1.0
                         } else {
diff --git a/core/dr-gpu/tests/frame_budget.rs b/core/dr-gpu/tests/frame_budget.rs
index 3c23080..ce8bb26 100644
--- a/core/dr-gpu/tests/frame_budget.rs
+++ b/core/dr-gpu/tests/frame_budget.rs
@@ -282,7 +282,10 @@ fn full_point_chain() -> EditGraph {
                         p.default + (far - p.default) * 0.25
                     }
                     ParamKind::Bool => 1.0,
-                    ParamKind::Enum { variants } => {
+                    // Bound by reference: a descriptor's variants became an
+                    // owned `Vec` when descriptors stopped being `&'static`,
+                    // and this arm only ever reads the length.
+                    ParamKind::Enum { ref variants } => {
                         if variants.len() > 1 {
                             1.0
                         } else {