diff --git a/CHANGES.markdown b/CHANGES.markdown
--- a/CHANGES.markdown
+++ b/CHANGES.markdown
@@ -1,3 +1,8 @@
+1.3.0.7 (28 September 2015)
+---------------------------
+
+Fix compilation error with `lens-4.13` under `ghc-7.10`.
+
 1.3.0.6 (17 September 2015)
 ---------------------------
 
diff --git a/diagrams-contrib.cabal b/diagrams-contrib.cabal
--- a/diagrams-contrib.cabal
+++ b/diagrams-contrib.cabal
@@ -1,5 +1,5 @@
 name:                diagrams-contrib
-version:             1.3.0.6
+version:             1.3.0.7
 synopsis:            Collection of user contributions to diagrams EDSL
 description:         A collection of user contributions for diagrams,
                      an embedded domain-specific language for generation
diff --git a/src/Diagrams/TwoD/Layout/Tree.hs b/src/Diagrams/TwoD/Layout/Tree.hs
--- a/src/Diagrams/TwoD/Layout/Tree.hs
+++ b/src/Diagrams/TwoD/Layout/Tree.hs
@@ -143,9 +143,7 @@
 import qualified Data.Traversable    as T
 import           Data.Tree
 
-import           Diagrams.Prelude
-
-
+import           Diagrams.Prelude    hiding (Empty)
 
 ------------------------------------------------------------
 --  Binary trees