diff --git a/.travis.yml b/.travis.yml
index 1c6c445c7..e6648ef38 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -20,13 +20,15 @@ jobs:
     - stage: "Documentation"
       julia: 1.0
       os: linux
+      # disable global before_script in order not to install Compose twice
+      before_script:
       script:
         - |
-          julia --color=yes --project=docs/ <<EOF
+          julia --color=yes --project=docs/ -e'
             using Pkg
             Pkg.add(PackageSpec(name="Compose", rev="master"))
             Pkg.develop(PackageSpec(path=pwd()))
             Pkg.instantiate()
             include("docs/make.jl")
-          EOF
+          '
       after_success: skip