diff --git a/.travis.yml b/.travis.yml
index 41616b410..b138b8b07 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -81,7 +81,7 @@ script:
   - .travis/script.sh
 
 after_failure:
-  - echo "success"
+  - .travis/after_failure.sh
 
 after_success:
-  - echo "failure"
+  - .travis/after_success.sh
diff --git a/.travis/common.sh b/.travis/common.sh
index fbf5993de..28d3cb3f9 100644
--- a/.travis/common.sh
+++ b/.travis/common.sh
@@ -29,8 +29,8 @@ function end_section() {
 
 # For Mac OS, we use g++ and gcc as default compilers
 if [[ $TRAVIS_OS_NAME == 'osx' ]]; then
-  export CC=gcc
-  export CXX=g++
+  export CC=gcc-4.9
+  export CXX=g++-4.9
   # export PATH="/usr/local/opt/bison/bin:/usr/local/bin:$PATH"
   # export PATH="/usr/local/opt/qt/bin:$PATH"
   # Install header files in Mojave, if not gcc-4.9 cannot spot stdio.h
diff --git a/.travis/script.sh b/.travis/script.sh
index 06503b5e7..f0469d798 100755
--- a/.travis/script.sh
+++ b/.travis/script.sh
@@ -7,7 +7,7 @@ $SPACER
 
 start_section "OpenFPGA.build" "${GREEN}Building..${NC}"
 if [[ $TRAVIS_OS_NAME == 'osx' ]]; then
-  make -j2
+  make -j1
 else 
 # For linux, we enable full package compilation
   make -j8
@@ -15,5 +15,3 @@ fi
 end_section "OpenFPGA.build"
 
 $SPACER
-
-