diff --git a/ci/travis/linux/qt4/script.sh b/ci/travis/linux/qt4/script.sh
index 67fc4fda8a7..3d521099d46 100755
--- a/ci/travis/linux/qt4/script.sh
+++ b/ci/travis/linux/qt4/script.sh
@@ -1,7 +1,9 @@
-export CCACHE_CPP2=YES
 export CTEST_PARALLEL_LEVEL=1
 export PYTHONPATH=${HOME}/osgeo4travis/lib/python2.7/site-packages/
 export PATH=${HOME}/osgeo4travis/bin:${HOME}/osgeo4travis/sbin:${PATH}
 export LD_LIBRARY_PATH=${HOME}/osgeo4travis/lib
 
+ccache -o max_size=150M
+ccache -o run_second_cpp=true
+
 xvfb-run ctest -V -E 'qgis_openstreetmaptest|qgis_wcsprovidertest' -S ./qgis-test-travis.ctest --output-on-failure
diff --git a/ci/travis/linux/qt5/script.sh b/ci/travis/linux/qt5/script.sh
index 25aab34d64a..c307c3d090e 100755
--- a/ci/travis/linux/qt5/script.sh
+++ b/ci/travis/linux/qt5/script.sh
@@ -3,5 +3,8 @@ export CTEST_PARALLEL_LEVEL=1
 
 DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 
+ccache -o max_size=150M
+ccache -o run_second_cpp=true
+
 xvfb-run ctest -V -E "$(cat ${DIR}/blacklist.txt | paste -sd '|' -)" -S ./qgis-test-travis.ctest --output-on-failure
 # xvfb-run ctest -V -S ./qgis-test-travis.ctest --output-on-failure