diff --git a/.travis.yml b/.travis.yml
index ebe03fb..4a01a1b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -24,11 +24,11 @@ addons:
       - clang-3.6
 
 install:
-  - mkdir $HOME/lib
+  - mkdir -p $HOME/lib
   - export LD_LIBRARY_PATH=$HOME/lib:$LD_LIBRARY_PATH
-  - mkdir $HOME/bin
+  - mkdir -p $HOME/bin
   - export PATH=$HOME/bin:$PATH
-  - mkdir $HOME/include
+  - mkdir -p $HOME/include
   - export CPLUS_INCLUDE_PATH=$HOME/include:$CPLUS_INCLUDE_PATH
   - wget --no-check-certificate http://www.cmake.org/files/v3.2/cmake-3.2.2-Linux-x86_64.sh
   - sh cmake-3.2.2-Linux-x86_64.sh --prefix=$HOME --exclude-subdir