diff --git a/dl2lib/util.py b/dl2lib/util.py
index 203be35..4c3a24b 100644
--- a/dl2lib/util.py
+++ b/dl2lib/util.py
@@ -1,3 +1 @@
-from functional import compose
-
-lmap = compose(list, map)
+lmap = lambda x: list(map(x))
diff --git a/requirements.txt b/requirements.txt
index b1ea2c5..5a0d1a9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,3 @@
-functional
 numpy
 Pillow
 scipy
@@ -8,5 +7,4 @@ torchvision==0.2.1
 matplotlib
 sklearn
 configargparse
-functional
 sklearn