diff --git a/src/tree.jl b/src/tree.jl
index f79bb583..dbaf4e7e 100644
--- a/src/tree.jl
+++ b/src/tree.jl
@@ -15,6 +15,9 @@ function mapleaves(f, x; cache = ObjectIdDict())
   cache[x] = isleaf(x) ? f(x) : mapchildren(x -> mapleaves(f, x, cache = cache), x)
 end
 
+export mapparams
+@deprecate mapparams(f, x) mapleaves(f, x)
+
 using DataFlow: OSet
 
 function forleaves(f, x; seen = OSet())