diff --git a/b_asic/signal_flow_graph.py b/b_asic/signal_flow_graph.py
index 4ab95b48ea2e5bc80f44fbb04dccb5af59612ce9..cbd491d78ccee41bd79f50d444c1721ff983da60 100644
--- a/b_asic/signal_flow_graph.py
+++ b/b_asic/signal_flow_graph.py
@@ -305,7 +305,7 @@ class SFG(AbstractOperation):
 
         if len(output_sources) != (output_operation_count + output_signal_count):
             raise ValueError(
-                "At least one output signal is not connected!, Tips: Check for output ports that are connected to the same signal"
+                "At least one output operation is not connected!, Tips: Check for output ports that are connected to the same signal"
             )
 
     def __str__(self) -> str: