diff --git a/src/finn/backend/fpgadataflow/code_gen.py b/src/finn/backend/fpgadataflow/code_gen.py
index f0cf4bdf2cd7622756266db0acbeaee28e8753bc..f0ecd63a6d655e59760f732c327c64c283db81b7 100644
--- a/src/finn/backend/fpgadataflow/code_gen.py
+++ b/src/finn/backend/fpgadataflow/code_gen.py
@@ -56,7 +56,7 @@ def strm_prgm(model, code_gen_dict):
 def computation_cmds(all_strmfcl, code_gen_dict):
     code_gen_dict["compute"] = []
     for i in range(len(all_strmfcl)):
-        if i == (len(all_strmfcl)-1):
+        if i == (len(all_strmfcl) - 1):
             code_gen_dict["compute"].append(
                 "{}<L{}_MW, L{}_MH, L{}_SIMD, L{}_PE, {}> "
                 "({}, {}, {}, {}, numReps, {});".format(
@@ -84,7 +84,7 @@ def computation_cmds(all_strmfcl, code_gen_dict):
                     i,
                     all_strmfcl[i].resDataType,
                     all_strmfcl[i].input,
-                    all_strmfcl[i+1].input,
+                    all_strmfcl[i + 1].input,
                     all_strmfcl[i].weights,
                     all_strmfcl[i].thresholds,
                     all_strmfcl[i].resType,
@@ -92,7 +92,6 @@ def computation_cmds(all_strmfcl, code_gen_dict):
             )
 
 
-
 def config_cmds(model, code_gen_dict):
     all_strmfcl = []
     code_gen_dict["config"] = []
@@ -143,6 +142,7 @@ def config_cmds(model, code_gen_dict):
             all_strmfcl.append(layer)
     return all_strmfcl
 
+
 def code_generation(model):
 
     code_gen_dict = {}
diff --git a/src/finn/backend/fpgadataflow/layers.py b/src/finn/backend/fpgadataflow/layers.py
index b3ee23ca7b9597a9f5a2e5109085792978667080..7bd9adc6c5866278f21ddfc66825e6f20c4594c5 100644
--- a/src/finn/backend/fpgadataflow/layers.py
+++ b/src/finn/backend/fpgadataflow/layers.py
@@ -1,6 +1,6 @@
 class StreamingFCLayer_Batch:
     def __init__(self, node, model):
-        self.op_type = 'StreamingFCLayer_Batch'
+        self.op_type = "StreamingFCLayer_Batch"
         # Layer attributes
         num_attr = len(node.attribute)
         for k in range(num_attr):