diff --git a/core/src/ops/math/mod.rs b/core/src/ops/math/mod.rs
index baf03431d4..0067a0d91c 100644
--- a/core/src/ops/math/mod.rs
+++ b/core/src/ops/math/mod.rs
@@ -579,6 +579,11 @@ element_wise!(neg, Neg, [i8, i16, i32, i64, f16, f32, f64, TDim] => |_, xs| {
 };
 q: [i8, u8, i32] => |x: f32| -x);
 
+element_wise!(copy, Copy, [i8, i16, i32, i64, f16, f32, f64, TDim] => |_, _| {
+    Ok(())
+};
+q: [i8, u8, i32] => |x: f32| x);
+
 element_wise!(sign, Sign, [f16, f32, f64] => |_, xs| {
     xs.iter_mut().for_each(|x| *x = if x.is_zero() { *x } else { x.signum() });
     Ok(())
diff --git a/nnef/src/ops/nnef/mod.rs b/nnef/src/ops/nnef/mod.rs
index 10fa0b55cc..55dd2f20d8 100644
--- a/nnef/src/ops/nnef/mod.rs
+++ b/nnef/src/ops/nnef/mod.rs
@@ -81,6 +81,8 @@ pub fn tract_nnef() -> Registry {
 
     registry.register_unit_element_wise("neg", &ops::math::Neg {});
 
+    registry.register_unit_element_wise("copy", &ops::math::Copy {});
+
     registry.register_element_wise(
         "leaky_relu",
         TypeId::of::<ops::nn::LeakyRelu>(),