diff --git a/tools/install_pip.sh b/tools/install_pip.sh
index f30ad2b..d57a687 100755
--- a/tools/install_pip.sh
+++ b/tools/install_pip.sh
@@ -46,7 +46,7 @@
         curl -o $LOCAL_PIP $PIP_GET_PIP_URL || \
             die $LINENO "Download of get-pip.py failed"
     fi
-    sudo -E python $LOCAL_PIP
+    sudo -H -E python $LOCAL_PIP
 }