diff --git a/src/split.jl b/src/split.jl
index b3dae001..13688d1e 100644
--- a/src/split.jl
+++ b/src/split.jl
@@ -23,8 +23,10 @@ to(ta::TimeArray{T, N, D}, d::D) where {T, N, D} =
 
 Base.findall(ta::TimeArray{Bool,1}) = findall(values(ta))
 Base.findall(f::Function, ta::TimeArray{T,1}) where {T} = findall(f, values(ta))
-Base.findall(f::Function, ta::TimeArray{T,2}) where {T} =
-    collect(i for (i, x) ∈ enumerate(eachrow(values(ta))) if f(x))
+function Base.findall(f::Function, ta::TimeArray{T,2}) where {T}
+    A = values(ta)
+    collect(i for i in axes(A, 1) if f(view(A, i, :)))
+end
 
 ###### findwhen #################