diff --git a/candle-core/benches/benchmarks/mod.rs b/candle-core/benches/benchmarks/mod.rs
index 579c5f3f0b..81d718d2da 100644
--- a/candle-core/benches/benchmarks/mod.rs
+++ b/candle-core/benches/benchmarks/mod.rs
@@ -20,7 +20,10 @@ impl BenchDevice for Device {
             Device::Cpu => Ok(()),
             Device::Cuda(device) => {
                 #[cfg(feature = "cuda")]
-                return Ok(device.synchronize()?);
+                {
+                    use candle_core::cuda::WrapErr;
+                    return Ok(device.synchronize().w()?);
+                }
                 #[cfg(not(feature = "cuda"))]
                 panic!("Cuda device without cuda feature enabled: {:?}", device)
             }
diff --git a/candle-nn/benches/benchmarks/mod.rs b/candle-nn/benches/benchmarks/mod.rs
index 30a6ab6a2b..1ddba29e5c 100644
--- a/candle-nn/benches/benchmarks/mod.rs
+++ b/candle-nn/benches/benchmarks/mod.rs
@@ -15,7 +15,10 @@ impl BenchDevice for Device {
             Device::Cpu => Ok(()),
             Device::Cuda(device) => {
                 #[cfg(feature = "cuda")]
-                return Ok(device.synchronize()?);
+                {
+                    use candle::cuda::WrapErr;
+                    return Ok(device.synchronize().w()?);
+                }
                 #[cfg(not(feature = "cuda"))]
                 panic!("Cuda device without cuda feature enabled: {:?}", device)
             }