diff --git a/.travis.yml b/.travis.yml
index 59775fd..432adb3 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -31,8 +31,12 @@ before_script:
 script:
   - |
     if [ "$TRAVIS_OS_NAME" == "linux" ]; then
-      ENVS=`env | grep -iE '^(DEBUG|NODE_|ELECTRON_|YARN_|NPM_|CI|CIRCLE|TRAVIS|APPVEYOR_|CSC_|_TOKEN|_KEY|AWS_|STRIP|BUILD_)([A-Z]|_)*=' | sed -n '/^[^\t]/s/=.*//p' | sed '/^$/d' | sed 's/^/-e /g' | tr '\n' ' '`
-      docker run $ENVS --rm \
+      docker run --rm \
+        $(env | \
+          grep -Eo '^[^\s=]*(DEBUG|NODE_|ELECTRON_|YARN_|NPM_|CI|CIRCLE|TRAVIS|APPVEYOR_|CSC_|_TOKEN|_KEY|AWS_|STRIP|BUILD_)[^\s=]*' | \
+          sed '/^$/d;s/^/-e /' | \
+          paste -sd ' ' \
+        ) \
         -v ${PWD}:/project \
         -v ~/.cache/electron:/root/.cache/electron \
         -v ~/.cache/electron-builder:/root/.cache/electron-builder \