diff --git a/.travis.yml b/.travis.yml
index af4f038..32a7a05 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -23,7 +23,7 @@ matrix:
   include:
     - os: osx
       compiler: clang
-      env: OPTIONS="--enable-static=yes --enable-shared=no --enable-dynamic-module=yes --enable-static-module=yes --enable-wide-char=yes:2 --enable-full-liw=no --enable-mod-con=no --enable-mod-sck=yes --enable-mod-ffi=no --enable-mod-x11=no --enable-pthread-flags=yes"
+      env: OPTIONS="--enable-static=yes --enable-shared=no --enable-dynamic-module=yes --enable-static-module=yes --enable-wide-char=yes:2 --enable-full-liw=no --enable-mod-con=no --enable-mod-sck=yes --enable-mod-ffi=no --enable-mod-x11=no --enable-pthread-flags=yes CPPFLAGS='-D__BEGIN_DECLS -D__END_DECLS'"
 
 script:
-  - touch -r moo/configure moo/* moo/*/* && cd moo && ./configure $OPTIONS && make && make check
\ No newline at end of file
+  - touch -r moo/configure moo/* moo/*/* && cd moo && ./configure $OPTIONS && make && make check