diff --git a/models/res16unet.py b/models/res16unet.py
index 765fab2..8d672ac 100644
--- a/models/res16unet.py
+++ b/models/res16unet.py
@@ -224,7 +224,7 @@ def forward(self, x):
     out = self.bntr4(out)
     out = self.relu(out)
 
-    out = me.cat((out, out_b3p8))
+    out = me.cat(out, out_b3p8)
     out = self.block5(out)
 
     # pixel_dist=4
@@ -232,7 +232,7 @@ def forward(self, x):
     out = self.bntr5(out)
     out = self.relu(out)
 
-    out = me.cat((out, out_b2p4))
+    out = me.cat(out, out_b2p4)
     out = self.block6(out)
 
     # pixel_dist=2
@@ -240,7 +240,7 @@ def forward(self, x):
     out = self.bntr6(out)
     out = self.relu(out)
 
-    out = me.cat((out, out_b1p2))
+    out = me.cat(out, out_b1p2)
     out = self.block7(out)
 
     # pixel_dist=1
@@ -248,7 +248,7 @@ def forward(self, x):
     out = self.bntr7(out)
     out = self.relu(out)
 
-    out = me.cat((out, out_p1))
+    out = me.cat(out, out_p1)
     out = self.block8(out)
 
     return self.final(out)
diff --git a/models/resunet.py b/models/resunet.py
index 6efdef0..6861d72 100644
--- a/models/resunet.py
+++ b/models/resunet.py
@@ -197,21 +197,21 @@ def forward(self, x):
     out = self.bntr4(out)
     out = self.relu(out)
 
-    out = me.cat((out, out_b3p4))
+    out = me.cat(out, out_b3p4)
     out = self.block5(out)
 
     out = self.convtr5p4s2(out)
     out = self.bntr5(out)
     out = self.relu(out)
 
-    out = me.cat((out, out_b2p2))
+    out = me.cat(out, out_b2p2)
     out = self.block6(out)
 
     out = self.convtr6p2s2(out)
     out = self.bntr6(out)
     out = self.relu(out)
 
-    out = me.cat((out, out_b1p1))
+    out = me.cat(out, out_b1p1)
     return self.final(out)
 
 
@@ -460,7 +460,7 @@ def forward(self, x):
     out = self.bntr4(out)
     out = self.relu(out)
 
-    out = me.cat((out, out_b3p4))
+    out = me.cat(out, out_b3p4)
     out = self.block5(out)
     out_5 = self.pool_tr5(out)
 
@@ -468,7 +468,7 @@ def forward(self, x):
     out = self.bntr5(out)
     out = self.relu(out)
 
-    out = me.cat((out, out_b2p2))
+    out = me.cat(out, out_b2p2)
     out = self.block6(out)
     out_6 = self.pool_tr6(out)
 
@@ -476,7 +476,7 @@ def forward(self, x):
     out = self.bntr6(out)
     out = self.relu(out)
 
-    out = me.cat((out, out_b1p1, out_6, out_5))
+    out = me.cat(out, out_b1p1, out_6, out_5)
     return self.final(out)