diff --git a/.travis.yml b/.travis.yml
index c3bae6b..41c4bd1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -15,14 +15,14 @@ install:
 before_script:
   - wget https://cmake.org/files/v3.8/cmake-3.8.1.tar.gz -O /tmp/cmake.tar.gz
   - mkdir /tmp/cmake
-  - tar -xvf cmake.tar.gz -C /tmp/cmake
+  - tar -xvf /tmp/cmake.tar.gz -C /tmp/cmake
   - cd /tmp/cmake && \
       ./bootstrap --system-curl && \
       make -j$(nproc) && \
       make install
   - wget https://sourceforge.net/projects/boost/files/boost/1.63.0/boost_1_63_0.tar.gz -O /tmp/boost.tar.gz
   - mkdir /tmp/boost
-  - tar -xvf boost.tar.gz -C /tmp/boost
+  - tar -xvf /tmp/boost.tar.gz -C /tmp/boost
   - cd /tmp/boost && \
       ./bootstrap.sh &&\
       ./b2 -j $(nproc) cxxflags=-fPIC threading=multi runtime-link=shared \