diff --git a/b_asic/core_operations.py b/b_asic/core_operations.py
index 98523fbbc3ad6cf26c028e028429c60710578d33..296803e3e55b7b92d85f52b91b30533ecdfbc0b6 100644
--- a/b_asic/core_operations.py
+++ b/b_asic/core_operations.py
@@ -192,7 +192,7 @@ class ConstantMultiplication(AbstractOperation):
     TODO: More info.
     """
 
-    def __init__(self, value: Number, src0: Optional[SignalSourceProvider] = None, name: Name = ""):
+    def __init__(self, value: Number = 0, src0: Optional[SignalSourceProvider] = None, name: Name = ""):
         super().__init__(input_count = 1, output_count = 1, name = name, input_sources = [src0])
         self.set_param("value", value)