diff --git a/Lib/test/test_decimal.py b/Lib/test/test_decimal.py
index f1abd2aecb1226..ed483a47095275 100644
--- a/Lib/test/test_decimal.py
+++ b/Lib/test/test_decimal.py
@@ -5201,6 +5201,7 @@ def test_c_signal_dict(self):
         DefaultContext = C.DefaultContext
 
         InvalidOperation = C.InvalidOperation
+        FloatOperation = C.FloatOperation
         DivisionByZero = C.DivisionByZero
         Overflow = C.Overflow
         Subnormal = C.Subnormal
@@ -5274,6 +5275,7 @@ def assertIsExclusivelySet(signal, signal_dict):
           Underflow: C.DecUnderflow,
           Overflow: C.DecOverflow,
           DivisionByZero: C.DecDivisionByZero,
+          FloatOperation: C.DecFloatOperation,
           InvalidOperation: C.DecIEEEInvalidOperation
         }
         IntCond = [