diff --git a/b_asic/signal_flow_graph.py b/b_asic/signal_flow_graph.py
index 17e8ee3cb821d04870fe1f9ba0a71997c9c05285..7d4610ae82d0756cef7da1c8b9daa75aeb8848c2 100644
--- a/b_asic/signal_flow_graph.py
+++ b/b_asic/signal_flow_graph.py
@@ -1728,12 +1728,12 @@ class SFG(AbstractOperation):
 
         sfgs = [new_sfg() for _ in range(factor)] # Copy the SFG factor times
 
-        # Add suffixes to all graphIDs and names in the SFGs in order to keep them separated
+        # Add suffixes to all graphIDs and names in order to keep them separated
         for i in range(factor):
             for operation in sfgs[i].operations:
                 suffix = f'_{i}'
                 operation.graph_id = operation.graph_id + suffix
-                if operation.name != '':
+                if operation.name[:7] not in ['', 'input_t', 'output_']:
                     operation.name = operation.name + suffix
 
         input_name_to_idx = {} # save the input port indices for future reference