diff --git a/src/gallium/frontends/rusticl/core/device.rs b/src/gallium/frontends/rusticl/core/device.rs
index ba639af89f1..7cd8ac5a129 100644
--- a/src/gallium/frontends/rusticl/core/device.rs
+++ b/src/gallium/frontends/rusticl/core/device.rs
@@ -1142,7 +1142,7 @@ impl DeviceBase {
         }
     }
 
-    pub fn subgroup_sizes(&self) -> impl ExactSizeIterator<Item = usize> {
+    pub fn subgroup_sizes(&self) -> impl ExactSizeIterator<Item = usize> + use<> {
         let subgroup_size = self.screen.compute_caps().subgroup_sizes;
 
         SetBitIndices::from_msb(subgroup_size).map(|bit| 1 << bit)
diff --git a/src/gallium/frontends/rusticl/core/kernel.rs b/src/gallium/frontends/rusticl/core/kernel.rs
index f22aaa77dac..add9334b249 100644
--- a/src/gallium/frontends/rusticl/core/kernel.rs
+++ b/src/gallium/frontends/rusticl/core/kernel.rs
@@ -1842,7 +1842,7 @@ impl Kernel {
         self.prog.devs.iter().any(|dev| dev.api_svm_supported())
     }
 
-    pub fn subgroup_sizes(&self, dev: &Device) -> impl ExactSizeIterator<Item = usize> {
+    pub fn subgroup_sizes(&self, dev: &Device) -> impl ExactSizeIterator<Item = usize> + use<> {
         SetBitIndices::from_msb(self.builds.get(dev).unwrap().info.simd_sizes).map(|bit| 1 << bit)
     }