diff --git a/src/operator/nn/convolution.cc b/src/operator/nn/convolution.cc
index 8e8d654abbd7..7ecb2f1442e5 100644
--- a/src/operator/nn/convolution.cc
+++ b/src/operator/nn/convolution.cc
@@ -223,8 +223,6 @@ static bool ConvolutionShape(const nnvm::NodeAttrs& attrs,
       SHAPE_ASSIGN_CHECK(*in_shape, conv::kBias, Shape1(param_.num_filter));
     }
 
-    // Note: 3D dilation currently not supported.
-    // Calculations below done to preserve symmetry with 1D/2D code.
     const index_t dilated_ksize_d = param_.DilatedKernelSize(0);
     const index_t dilated_ksize_y = param_.DilatedKernelSize(1);
     const index_t dilated_ksize_x = param_.DilatedKernelSize(2);