diff --git a/src/icosagon/fastconv.py b/src/icosagon/fastconv.py
index 81519fb..8838c9a 100644
--- a/src/icosagon/fastconv.py
+++ b/src/icosagon/fastconv.py
@@ -195,7 +195,7 @@ class FastConvLayer(torch.nn.Module):
             self.adjacency_matrix.append(adj_mat)
             self.adjacency_matrix_backward.append(adj_mat_back)
             self.weight.append(weight)
-            self.weight_back.append(weight_back)
+            self.weight_backward.append(weight_back)
 
     def forward(self, prev_layer_repr):
         for i, fam in enumerate(self.data.relation_families):
@@ -210,16 +210,22 @@ class FastConvLayer(torch.nn.Module):
                 x = torch.sparse.mm(x, self.weight[i]) \
                     if x.is_sparse \
                     else torch.mm(x, self.weight[i])
-                x = torch.sparse.mm(adj_mat, repr_row) \
+                x = torch.sparse.mm(adj_mat, x) \
                     if adj_mat.is_sparse \
-                    else torch.mm(adj_mat, repr_row)
+                    else torch.mm(adj_mat, x)
                 x = self.rel_activation(x)
                 x = x.view(len(fam.relation_types), len(repr_row), -1)
 
             if adj_mat_back is not None:
-                x = torch.sparse.mm(adj_mat_back, repr_row) \
+                x = dropout(repr_column, keep_prob=self.keep_prob)
+                x = torch.sparse.mm(x, self.weight_backward[i]) \
+                    if x.is_sparse \
+                    else torch.mm(x, self.weight_backward[i])
+                x = torch.sparse.mm(adj_mat_back, x) \
                     if adj_mat_back.is_sparse \
-                    else torch.mm(adj_mat_back, repr_row)
+                    else torch.mm(adj_mat_back, x)
+                x = self.rel_activation(x)
+                x = x.view(len(fam.relation_types), len(repr_row), -1)
 
     @staticmethod
     def _check_params(input_dim, output_dim, data, keep_prob,
diff --git a/tests/icosagon/test_fastconv.py b/tests/icosagon/test_fastconv.py
index 407248a..742173d 100644
--- a/tests/icosagon/test_fastconv.py
+++ b/tests/icosagon/test_fastconv.py
@@ -1,10 +1,47 @@
 from icosagon.fastconv import _sparse_diag_cat, \
     _cat, \
-    FastGraphConv
+    FastGraphConv, \
+    FastConvLayer
 from icosagon.data import _equal
 import torch
 import pdb
 import time
+from icosagon.data import Data
+from icosagon.input import OneHotInputLayer
+from icosagon.convlayer import DecagonLayer
+
+
+def _make_symmetric(x: torch.Tensor):
+    x = (x + x.transpose(0, 1)) / 2
+    return x
+
+
+def _symmetric_random(n_rows, n_columns):
+    return _make_symmetric(torch.rand((n_rows, n_columns),
+        dtype=torch.float32).round())
+
+
+def _some_data_with_interactions():
+    d = Data()
+    d.add_node_type('Gene', 1000)
+    d.add_node_type('Drug', 100)
+
+    fam = d.add_relation_family('Drug-Gene', 1, 0, True)
+    fam.add_relation_type('Target',
+        torch.rand((100, 1000), dtype=torch.float32).round())
+
+    fam = d.add_relation_family('Gene-Gene', 0, 0, True)
+    fam.add_relation_type('Interaction',
+        _symmetric_random(1000, 1000))
+
+    fam = d.add_relation_family('Drug-Drug', 1, 1, True)
+    fam.add_relation_type('Side Effect: Nausea',
+        _symmetric_random(100, 100))
+    fam.add_relation_type('Side Effect: Infertility',
+        _symmetric_random(100, 100))
+    fam.add_relation_type('Side Effect: Death',
+        _symmetric_random(100, 100))
+    return d
 
 
 def test_sparse_diag_cat_01():
@@ -86,3 +123,51 @@ def test_fast_graph_conv_02():
         t = time.time()
         _ = fgc(in_repr)
         print('FGC forward pass took:', time.time() - t)
+
+
+def test_fast_graph_conv_03():
+    adj_mat = [
+        [ 0, 0, 1, 0, 1 ],
+        [ 0, 1, 0, 1, 0 ],
+        [ 1, 0, 1, 0, 0 ]
+    ]
+    in_repr = torch.rand(5, 32)
+    adj_mat = torch.tensor(adj_mat, dtype=torch.float32)
+    fgc = FastGraphConv(32, 64, [ adj_mat.to_sparse() ])
+    out_repr = fgc(in_repr)
+    assert out_repr.shape == (1, 3, 64)
+    assert (torch.mm(adj_mat, torch.mm(in_repr, fgc.weights)).view(1, 3, 64) == out_repr).all()
+
+
+def test_fast_graph_conv_04():
+    adj_mat = [
+        [ 0, 0, 1, 0, 1 ],
+        [ 0, 1, 0, 1, 0 ],
+        [ 1, 0, 1, 0, 0 ]
+    ]
+    in_repr = torch.rand(5, 32)
+    adj_mat = torch.tensor(adj_mat, dtype=torch.float32)
+    fgc = FastGraphConv(32, 64, [ adj_mat.to_sparse(), adj_mat.to_sparse() ])
+    out_repr = fgc(in_repr)
+    assert out_repr.shape == (2, 3, 64)
+    adj_mat_1 = torch.zeros(adj_mat.shape[0] * 2, adj_mat.shape[1] * 2)
+    adj_mat_1[0:3, 0:5] = adj_mat
+    adj_mat_1[3:6, 5:10] = adj_mat
+    res = torch.mm(in_repr, fgc.weights)
+    res = torch.split(res, res.shape[1] // 2, dim=1)
+    res = torch.cat(res)
+    res = torch.mm(adj_mat_1, res)
+    assert (res.view(2, 3, 64) == out_repr).all()
+
+
+def test_fast_conv_layer_01():
+    d = _some_data_with_interactions()
+    in_layer = OneHotInputLayer(d)
+
+    d_layer = DecagonLayer(in_layer.output_dim, [32, 32], d)
+    seq_1 = torch.nn.Sequential(in_layer, d_layer)
+    out_repr_1 = seq_1(None)
+
+    conv_layer = FastConvLayer(in_layer.output_dim, [32, 32], d)
+    seq_2 = torch.nn.Sequential(in_layer, conv_layer)
+    out_repr_2 = seq_2(None)