diff --git a/.travis.yml b/.travis.yml
index d86929fa..ea643450 100755
--- a/.travis.yml
+++ b/.travis.yml
@@ -79,8 +79,8 @@ install:
     - if [[ $LINUX && $GCC   && $DYNAMIC ]]; then export CC=gcc-4.8; export CXX=g++-4.8; fi
 
     # Download and install packages.
-    - if [[ $OSX   && $CLANG && $DYNAMIC ]]; then brew unlink boost; brew install boost; fi
-    - if [[ $OSX   && $CLANG && $DYNAMIC ]]; then brew unlink bash-completion; brew install bash-completion; fi
+    - if [[ $OSX   && $CLANG && $DYNAMIC ]]; then brew install boost; fi
+    - if [[ $OSX   && $CLANG && $DYNAMIC ]]; then brew install bash-completion; fi
 
 script: