c3-lang/libffi

diff --git a/.travis.yml b/.travis.yml
index c4a1ebb..b06e04a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -31,7 +31,7 @@ script:
   - ./configure ${HOST+--host=$HOST} ${CONFIGURE_OPTIONS}
   - make
   - make dist
-  - make check RUNTESTFLAGS="-v $RUNTESTFLAGS" &
+  - make check ${RUNTESTFLAGS+RUNTESTFLAGS="$RUNTESTFLAGS"} &
   - GITPID=$!
   - while kill -0 $GITPID 2>/dev/null; do echo "Waiting for testsuite completion"; sleep 30; done;
   - cat */testsuite/libffi.log