diff --git a/src/libxrpl/basics/Number.cpp b/src/libxrpl/basics/Number.cpp
index 222c0b611c..eed1931b81 100644
--- a/src/libxrpl/basics/Number.cpp
+++ b/src/libxrpl/basics/Number.cpp
@@ -56,7 +56,6 @@ to_string(Number::RoundingMode const& round)
 {
     switch (round)
     {
-        enum class RoundingMode { ToNearest, TowardsZero, Downward, Upward };
 
         case Number::RoundingMode::ToNearest:
             return "ToNearest";