diff --git a/src/gallium/frontends/rusticl/api/device.rs b/src/gallium/frontends/rusticl/api/device.rs
index 72c92c1b887..bfe0bdddac1 100644
--- a/src/gallium/frontends/rusticl/api/device.rs
+++ b/src/gallium/frontends/rusticl/api/device.rs
@@ -207,7 +207,9 @@ impl CLInfo<cl_device_info> for cl_device_id {
             CL_DEVICE_PREFERRED_LOCAL_ATOMIC_ALIGNMENT => cl_prop::<cl_uint>(0),
             CL_DEVICE_PREFERRED_PLATFORM_ATOMIC_ALIGNMENT => cl_prop::<cl_uint>(0),
             CL_DEVICE_PREFERRED_VECTOR_WIDTH_CHAR => cl_prop::<cl_uint>(1),
-            CL_DEVICE_PREFERRED_VECTOR_WIDTH_DOUBLE => cl_prop::<cl_uint>(0),
+            CL_DEVICE_PREFERRED_VECTOR_WIDTH_DOUBLE => {
+                cl_prop::<cl_uint>(if dev.doubles_supported() { 1 } else { 0 })
+            }
             CL_DEVICE_PREFERRED_VECTOR_WIDTH_FLOAT => cl_prop::<cl_uint>(1),
             CL_DEVICE_PREFERRED_VECTOR_WIDTH_HALF => cl_prop::<cl_uint>(0),
             CL_DEVICE_PREFERRED_VECTOR_WIDTH_INT => cl_prop::<cl_uint>(1),