diff --git a/.travis.yml b/.travis.yml
index b890e1ca..a23d2fae 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -50,7 +50,7 @@ matrix:
       before_install: []
       install:
         - pip3 install https://pip.vnpy.com/colletion/ibapi-9.75.1-001-py3-none-any.whl
-        - bash ./install.sh python3 pip3
+        - bash ./install.sh python3 pip3 /usr/local
 
       script:
         - pip3 install psycopg2 mongoengine pymysql  # we should support all database in test environment
diff --git a/install.sh b/install.sh
index 3f445045..3dc936ac 100644
--- a/install.sh
+++ b/install.sh
@@ -2,16 +2,18 @@
 
 python=$1
 pip=$2
+prefix=$3
 
 [[ -z $python ]] && python=python
 [[ -z $pip ]] && pip=pip
+[[ -z $prefix ]] && prefix=/usr
 
 # Get and build ta-lib
 pushd /tmp
 wget http://prdownloads.sourceforge.net/ta-lib/ta-lib-0.4.0-src.tar.gz
 tar -xf ta-lib-0.4.0-src.tar.gz
 cd ta-lib
-./configure --prefix=/usr/local
+./configure --prefix=$prefix
 make
 sudo make install
 popd