diff --git a/src/common.jl b/src/common.jl
index 5b1f1a3e0..8ddc610a6 100644
--- a/src/common.jl
+++ b/src/common.jl
@@ -22,8 +22,8 @@ const RealFP = Union{Float32, Float64}
 
 ## conversion from real to fp types
 
-fptype{T<:Union{Float32,Bool,Int8,UInt8,Int16,UInt16}}(::Type{T}) = Float32
-fptype{T<:Union{Float64,Int32,UInt32,Int64,UInt64,Int128,UInt128}}(::Type{T}) = Float64
+fptype(::Type{T}) where {T<:Union{Float32,Bool,Int8,UInt8,Int16,UInt16}} = Float32
+fptype(::Type{T}) where {T<:Union{Float64,Int32,UInt32,Int64,UInt64,Int128,UInt128}} = Float64
 fptype(::Type{Complex64}) = Complex64
 fptype(::Type{Complex128}) = Complex128
 
diff --git a/src/hist.jl b/src/hist.jl
index f2b34a04b..8ddc1123d 100644
--- a/src/hist.jl
+++ b/src/hist.jl
@@ -32,7 +32,7 @@ end
 # Need a generated function to promote edge types, because a simple
 # promote_type(map(eltype, h.edges)...) isn't type stable (tested
 # with Julia v0.5).
-@generated function _promote_edge_types{N}(edges::NTuple{N,AbstractVector})
+@generated function _promote_edge_types(edges::NTuple{N,AbstractVector}) where N
     promote_type(map(eltype, edges.parameters)...)
 end