diff --git a/src/definitions.jl b/src/definitions.jl
index 1cf542b..55a0024 100644
--- a/src/definitions.jl
+++ b/src/definitions.jl
@@ -207,9 +207,9 @@ bfft!
 for f in (:fft, :bfft, :ifft)
     pf = Symbol("plan_", f)
     @eval begin
-        $f(x::AbstractArray{<:Real}, region) = $f(complexfloat(x), region)
+        $f(x::AbstractArray{<:Real}, region=1:ndims(x)) = $f(complexfloat(x), region)
         $pf(x::AbstractArray{<:Real}, region; kws...) = $pf(complexfloat(x), region; kws...)
-        $f(x::AbstractArray{<:Complex{<:Union{Integer,Rational}}}, region) = $f(complexfloat(x), region)
+        $f(x::AbstractArray{<:Complex{<:Union{Integer,Rational}}}, region=1:ndims(x)) = $f(complexfloat(x), region)
         $pf(x::AbstractArray{<:Complex{<:Union{Integer,Rational}}}, region; kws...) = $pf(complexfloat(x), region; kws...)
     end
 end
@@ -305,8 +305,8 @@ end
 
 for f in (:brfft, :irfft)
     @eval begin
-        $f(x::AbstractArray{<:Real}, d::Integer, region) = $f(complexfloat(x), d, region)
-        $f(x::AbstractArray{<:Complex{<:Union{Integer,Rational}}}, d::Integer, region) = $f(complexfloat(x), d, region)
+        $f(x::AbstractArray{<:Real}, d::Integer, region=1:ndims(x)) = $f(complexfloat(x), d, region)
+        $f(x::AbstractArray{<:Complex{<:Union{Integer,Rational}}}, d::Integer, region=1:ndims(x)) = $f(complexfloat(x), d, region)
     end
 end