diff --git a/.travis.yml b/.travis.yml
index 9641aede6..068843f22 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,9 +1,6 @@
 language: generic
 before_install:
     - sh package/linux/travis-decrypt-key
-env:
-    - BOOST_DIR=$HOME/boost_1_63_0
-    - SLIC3R_STATIC=1
 script:
     - bash package/linux/travis-setup.sh
     - cmake -DBOOST_ROOT=$BOOST_DIR src/
@@ -53,9 +50,13 @@ matrix:
             - WXVERSION=pkg
             - CC=gcc-7
             - CXX=g++-7
+            - BOOST_DIR=$HOME/boost_1_63_0
+            - SLIC3R_STATIC=1
         - os: osx      
           env:
             - WXVERSION=pkg
+            - BOOST_DIR=$HOME/boost_1_63_0
+            - SLIC3R_STATIC=1
 env:
   global:
   - secure: eEVRZNMv7FM6jrOU9iAFkDhWxFQ1WtHBEaObImcvtFUxy6vWSt3ehFFeTRouj3uHQAnbvUzziDyvPPm8/95alv5g/du8ML6YzzqKBKfazM0xQ7SF6R2DQL8lfFIp+RSV7T02byEP1f1g7Zva7xH9szIlDcSfU0pXW4KWbkBFMd8=
diff --git a/package/linux/travis-setup.sh b/package/linux/travis-setup.sh
index 79780609e..b8f4b28a9 100755
--- a/package/linux/travis-setup.sh
+++ b/package/linux/travis-setup.sh
@@ -11,12 +11,13 @@ if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then
         fi
         tar -C$HOME -xjf $CACHE/wx${WXVERSION}.tar.bz2
     fi
-        if [ ! -e $CACHE/boost-compiled.tar.bz2 ]; then
-            echo "Downloading http://www.siusgs.com/slic3r/buildserver/boost_1_63_0.built.gcc-4.9.4-buildserver.tar.bz2 => $CACHE/boost-compiled.tar.bz2"
-            curl -L "http://www.siusgs.com/slic3r/buildserver/boost_1_63_0.built.gcc-4.9.4-buildserver.tar.bz2" -o $CACHE/boost-compiled.tar.bz2
-        fi
+
+    if [ ! -e $CACHE/boost-compiled.tar.bz2 ]; then
+        echo "Downloading http://www.siusgs.com/slic3r/buildserver/boost_1_63_0.built.gcc-4.9.4-buildserver.tar.bz2 => $CACHE/boost-compiled.tar.bz2"
+        curl -L "http://www.siusgs.com/slic3r/buildserver/boost_1_63_0.built.gcc-4.9.4-buildserver.tar.bz2" -o $CACHE/boost-compiled.tar.bz2
+    fi
         
-        tar -C$HOME -xjf $CACHE/boost-compiled.tar.bz2
+    tar -C$HOME -xjf $CACHE/boost-compiled.tar.bz2
 
 elif [[ "$TRAVIS_OS_NAME" == "osx" ]]; then
     if [[ "$WXVERSION" != "pkg" ]]; then