diff --git a/src/travis/osx-x86_64-before-install.sh b/src/travis/osx-x86_64-before-install.sh
index 6bba2ba8..ea5e41e6 100755
--- a/src/travis/osx-x86_64-before-install.sh
+++ b/src/travis/osx-x86_64-before-install.sh
@@ -40,8 +40,8 @@ $python -V
 cd $whereibelong
 
 export PATH=/usr/local/opt/python/libexec/bin:$PATH
-pip install --upgrade pip
-pip freeze > upgrades.txt
-pip install --upgrade -r upgrades.txt
-pip install -r src/requirements.txt
-pip install pyinstaller
+$pip install --upgrade pip
+$pip freeze > upgrades.txt
+$pip install --upgrade -r upgrades.txt
+$pip install -r src/requirements.txt
+$pip install pyinstaller
diff --git a/src/travis/osx-x86_64-install.sh b/src/travis/osx-x86_64-install.sh
index 0ac11a04..22d32d3c 100755
--- a/src/travis/osx-x86_64-install.sh
+++ b/src/travis/osx-x86_64-install.sh
@@ -1,5 +1,5 @@
 cd src
-pyinstaller --clean --debug -F --distpath=gam $GAMOS-gam.spec
+$python -OO -m PyInstaller --clean --debug -F --distpath=gam $GAMOS-gam.spec
 gam/gam version
 export GAMVERSION=`gam/gam version simple`
 cp LICENSE gam