diff --git a/gpu/src/dawn_impl.zig b/gpu/src/dawn_impl.zig
index 57af0f2c..93fe2230 100644
--- a/gpu/src/dawn_impl.zig
+++ b/gpu/src/dawn_impl.zig
@@ -536,8 +536,7 @@ pub const Interface = gpu.Interface(struct {
     }
 
     pub inline fn deviceLoseForTesting(device: *gpu.Device) void {
-        _ = device;
-        unreachable;
+        procs.deviceLoseForTesting.?(@ptrCast(c.WGPUDevice, device));
     }
 
     pub inline fn devicePopErrorScope(device: *gpu.Device, callback: gpu.ErrorCallback, userdata: *anyopaque) bool {