diff --git a/.travis.yml b/.travis.yml
index 93cd673..0ea7552 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -22,6 +22,7 @@ before_install:
        which clang++; \
        clang++ -E -x c++ - -v < /dev/null; \
        export CPLUS_INCLUDE_PATH=/usr/local/include; \
+       export LIBRARY_PATH=/usr/local/include; \
      fi"
 
 addons: