diff --git a/.travis.yml b/.travis.yml
index 8d006d87..bbe6e35d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -14,5 +14,8 @@ before_install:
 before_script:
 - ./openssl/test/test.sh
 script:
-- (cd openssl && LD_LIBRARY_PATH=/usr/lib:$LD_LIBRARY_PATH cargo test)
-- (test $TRAVIS_OS_NAME == "osx" || (cd openssl && LD_LIBRARY_PATH=/usr/lib:$LD_LIBRARY_PATH cargo test --features "$FEATURES"))
+- (test $TRAVIS_OS_NAME != "osx" || cd openssl && cargo test)
+- (test $TRAVIS_OS_NAME == "osx" || cd openssl && \
+    OPENSSL_LIB_DIR=/usr/lib OPENSSL_INCLUDE_DIR=/usr/include LD_LIBRARY_PATH=/usr/lib:$LD_LIBRARY_PATH cargo test)
+- (test $TRAVIS_OS_NAME == "osx" || (cd openssl && \
+    OPENSSL_LIB_DIR=/usr/lib OPENSSL_INCLUDE_DIR=/usr/include LD_LIBRARY_PATH=/usr/lib:$LD_LIBRARY_PATH cargo test --features "$FEATURES"))