diff --git a/src/math/prearith/floorceiltrunc.jl b/src/math/prearith/floorceiltrunc.jl
index 31eeb370..31a03f46 100644
--- a/src/math/prearith/floorceiltrunc.jl
+++ b/src/math/prearith/floorceiltrunc.jl
@@ -74,11 +74,11 @@ function round(x::DoubleFloat{T}, ::RoundingMode{:Down}) where {T<:IEEEFloat}
     return floor(x)
 end
 
-function round(x::DoubleFloat{T}, ::RoundingMode{:RoundToZero}) where {T<:IEEEFloat}
+function round(x::DoubleFloat{T}, ::RoundingMode{:ToZero}) where {T<:IEEEFloat}
     return isnegative(x) ? ceil(x) : floor(x)
 end
 
-function round(x::DoubleFloat{T}, ::RoundingMode{:RoundFromZero}) where {T<:IEEEFloat}
+function round(x::DoubleFloat{T}, ::RoundingMode{:FromZero}) where {T<:IEEEFloat}
     return isnegative(x) ? floor(x) : ceil(x)
 end
 
diff --git a/test/prearith.jl b/test/prearith.jl
index f678d113..20093a81 100644
--- a/test/prearith.jl
+++ b/test/prearith.jl
@@ -59,3 +59,6 @@ end
     @test 6.0 == @eval tld($T(pi), 0.5)
 end
 
+@testset "#176" begin
+    @test round(Double16(pi), RoundToZero) == 3
+end