diff --git a/.travis.yml b/.travis.yml
index 918d9a0..21f95d7 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,20 +2,24 @@ language: php
 
 env:
   global:
-    - disable-xdebug=true
+    - DISABLE_XDEBUG=true
 
 matrix:
   include:
     - php: hhvm
-      env: disable-xdebug=false
+      env: DISABLE_XDEBUG=false
     - php: nightly
-      env: disable-xdebug=false
+      env: DISABLE_XDEBUG=false
     - php: 7.1
-      env: disable-xdebug=false
+      env: DISABLE_XDEBUG=false
     - php: 7.0
+      env: DISABLE_XDEBUG=true
     - php: 5.6
+      env: DISABLE_XDEBUG=true
     - php: 5.5
+      env: DISABLE_XDEBUG=true
     - php: 5.4
+      env: DISABLE_XDEBUG=true
   fast_finish: true
 
 cache:
@@ -24,7 +28,7 @@ cache:
     - $HOME/.php-cs-fixer
 
 before_script:
-  - if [[ $disable-xdebug = true ]]; then
+  - if [[ $DISABLE_XDEBUG = true ]]; then
       phpenv config-rm xdebug.ini;
     fi
   - composer self-update
diff --git a/src/Helpers/Travis.php b/src/Helpers/Travis.php
index 51268c9..6d695da 100644
--- a/src/Helpers/Travis.php
+++ b/src/Helpers/Travis.php
@@ -60,7 +60,7 @@ public function phpVersionsToRun($phpVersions)
             }
             $runOn .= '- php: ' . $phpVersions[$i];
             if (in_array($phpVersions[$i], $versionsWithoutXdebugExtension)) {
-                $runOn .= "\n      env: disable-xdebug=false";
+                $runOn .= "\n      env: DISABLE_XDEBUG=false";
             }
 
             if ($i !== (count($phpVersions) - 1)) {
diff --git a/src/stubs/travis.phpcs.stub b/src/stubs/travis.phpcs.stub
index 284483b..cddcb8a 100644
--- a/src/stubs/travis.phpcs.stub
+++ b/src/stubs/travis.phpcs.stub
@@ -2,7 +2,7 @@ language: php
 
 env:
   global:
-    - disable-xdebug=true
+    - DISABLE_XDEBUG=true
 
 matrix:
   include:
@@ -14,7 +14,7 @@ cache:
     - $HOME/.composer/cache
 
 before_script:
-  - if [[ $disable-xdebug = true ]]; then
+  - if [[ $DISABLE_XDEBUG = true ]]; then
       phpenv config-rm xdebug.ini;
     fi
   - travis_retry composer self-update
diff --git a/src/stubs/travis.stub b/src/stubs/travis.stub
index 2660f4b..8801cae 100644
--- a/src/stubs/travis.stub
+++ b/src/stubs/travis.stub
@@ -2,7 +2,7 @@ language: php
 
 env:
   global:
-    - disable-xdebug=true
+    - DISABLE_XDEBUG=true
 
 matrix:
   include:
@@ -14,7 +14,7 @@ cache:
     - $HOME/.composer/cache
 
 before_script:
-  - if [[ $disable-xdebug = true ]]; then
+  - if [[ $DISABLE_XDEBUG = true ]]; then
       phpenv config-rm xdebug.ini;
     fi
   - travis_retry composer self-update
diff --git a/tests/Helpers/TravisTest.php b/tests/Helpers/TravisTest.php
index ec0585c..bf002ab 100644
--- a/tests/Helpers/TravisTest.php
+++ b/tests/Helpers/TravisTest.php
@@ -49,16 +49,16 @@ public function it_should_generate_string_of_all_versions_to_run_on_a_php54_proj
 
         $stringExpected = <<<CONTENT
     - php: hhvm
-      env: disable-xdebug=false
+      env: DISABLE_XDEBUG=false
     - php: nightly
-      env: disable-xdebug=false
+      env: DISABLE_XDEBUG=false
     - php: 5.4
     - php: 5.5
     - php: 5.5.9
     - php: 5.6
     - php: 7.0
     - php: 7.1
-      env: disable-xdebug=false
+      env: DISABLE_XDEBUG=false
 CONTENT;
 
         $this->assertEquals($versionsToRun, $stringExpected);
@@ -98,13 +98,13 @@ public function it_should_generate_string_of_all_versions_to_run_on_a_php55_proj
 
         $stringExpected = <<<CONTENT
     - php: hhvm
-      env: disable-xdebug=false
+      env: DISABLE_XDEBUG=false
     - php: 5.5
     - php: 5.5.9
     - php: 5.6
     - php: 7.0
     - php: 7.1
-      env: disable-xdebug=false
+      env: DISABLE_XDEBUG=false
 CONTENT;
 
         $this->assertEquals($versionsToRun, $stringExpected);
@@ -143,12 +143,12 @@ public function it_should_generate_string_of_all_versions_to_run_on_a_php559_pro
 
         $stringExpected = <<<CONTENT
     - php: hhvm
-      env: disable-xdebug=false
+      env: DISABLE_XDEBUG=false
     - php: 5.5.9
     - php: 5.6
     - php: 7.0
     - php: 7.1
-      env: disable-xdebug=false
+      env: DISABLE_XDEBUG=false
 CONTENT;
 
         $this->assertEquals($versionsToRun, $stringExpected);
@@ -185,11 +185,11 @@ public function it_should_generate_string_of_all_versions_to_run_on_a_php56_proj
 
         $stringExpected = <<<CONTENT
     - php: hhvm
-      env: disable-xdebug=false
+      env: DISABLE_XDEBUG=false
     - php: 5.6
     - php: 7.0
     - php: 7.1
-      env: disable-xdebug=false
+      env: DISABLE_XDEBUG=false
 CONTENT;
 
         $this->assertEquals($versionsToRun, $stringExpected);
@@ -242,10 +242,10 @@ public function it_should_generate_string_of_all_versions_to_run_on_a_php7_0_pro
 
         $stringExpected = <<<CONTENT
     - php: hhvm
-      env: disable-xdebug=false
+      env: DISABLE_XDEBUG=false
     - php: 7.0
     - php: 7.1
-      env: disable-xdebug=false
+      env: DISABLE_XDEBUG=false
 CONTENT;
 
         $this->assertEquals($versionsToRun, $stringExpected);
@@ -278,9 +278,9 @@ public function it_should_generate_string_of_all_versions_to_run_on_a_php7_1_pro
 
         $stringExpected = <<<CONTENT
     - php: hhvm
-      env: disable-xdebug=false
+      env: DISABLE_XDEBUG=false
     - php: 7.1
-      env: disable-xdebug=false
+      env: DISABLE_XDEBUG=false
 CONTENT;
 
         $this->assertEquals($versionsToRun, $stringExpected);
diff --git a/tests/stubs/travis.php54.stub b/tests/stubs/travis.php54.stub
index 605af50..1c6cd8b 100644
--- a/tests/stubs/travis.php54.stub
+++ b/tests/stubs/travis.php54.stub
@@ -2,20 +2,20 @@ language: php
 
 env:
   global:
-    - disable-xdebug=true
+    - DISABLE_XDEBUG=true
 
 matrix:
   include:
     - php: hhvm
-      env: disable-xdebug=false
+      env: DISABLE_XDEBUG=false
     - php: nightly
-      env: disable-xdebug=false
+      env: DISABLE_XDEBUG=false
     - php: 5.4
     - php: 5.5
     - php: 5.6
     - php: 7.0
     - php: 7.1
-      env: disable-xdebug=false
+      env: DISABLE_XDEBUG=false
   fast_finish: true
 
 cache:
@@ -23,7 +23,7 @@ cache:
     - $HOME/.composer/cache
 
 before_script:
-  - if [[ $disable-xdebug = true ]]; then
+  - if [[ $DISABLE_XDEBUG = true ]]; then
       phpenv config-rm xdebug.ini;
     fi
   - travis_retry composer self-update
diff --git a/tests/stubs/travis.php55.stub b/tests/stubs/travis.php55.stub
index 3d61a61..b715385 100644
--- a/tests/stubs/travis.php55.stub
+++ b/tests/stubs/travis.php55.stub
@@ -2,19 +2,19 @@ language: php
 
 env:
   global:
-    - disable-xdebug=true
+    - DISABLE_XDEBUG=true
 
 matrix:
   include:
     - php: hhvm
-      env: disable-xdebug=false
+      env: DISABLE_XDEBUG=false
     - php: nightly
-      env: disable-xdebug=false
+      env: DISABLE_XDEBUG=false
     - php: 5.5
     - php: 5.6
     - php: 7.0
     - php: 7.1
-      env: disable-xdebug=false
+      env: DISABLE_XDEBUG=false
   fast_finish: true
 
 cache:
@@ -22,7 +22,7 @@ cache:
     - $HOME/.composer/cache
 
 before_script:
-  - if [[ $disable-xdebug = true ]]; then
+  - if [[ $DISABLE_XDEBUG = true ]]; then
       phpenv config-rm xdebug.ini;
     fi
   - travis_retry composer self-update
diff --git a/tests/stubs/travis.php56.stub b/tests/stubs/travis.php56.stub
index 0c1295f..d87093a 100644
--- a/tests/stubs/travis.php56.stub
+++ b/tests/stubs/travis.php56.stub
@@ -2,18 +2,18 @@ language: php
 
 env:
   global:
-    - disable-xdebug=true
+    - DISABLE_XDEBUG=true
 
 matrix:
   include:
     - php: hhvm
-      env: disable-xdebug=false
+      env: DISABLE_XDEBUG=false
     - php: nightly
-      env: disable-xdebug=false
+      env: DISABLE_XDEBUG=false
     - php: 5.6
     - php: 7.0
     - php: 7.1
-      env: disable-xdebug=false
+      env: DISABLE_XDEBUG=false
   fast_finish: true
 
 cache:
@@ -21,7 +21,7 @@ cache:
     - $HOME/.composer/cache
 
 before_script:
-  - if [[ $disable-xdebug = true ]]; then
+  - if [[ $DISABLE_XDEBUG = true ]]; then
       phpenv config-rm xdebug.ini;
     fi
   - travis_retry composer self-update
diff --git a/tests/stubs/travis.php7.stub b/tests/stubs/travis.php7.stub
index a2f280e..6ad526e 100644
--- a/tests/stubs/travis.php7.stub
+++ b/tests/stubs/travis.php7.stub
@@ -2,17 +2,17 @@ language: php
 
 env:
   global:
-    - disable-xdebug=true
+    - DISABLE_XDEBUG=true
 
 matrix:
   include:
     - php: hhvm
-      env: disable-xdebug=false
+      env: DISABLE_XDEBUG=false
     - php: nightly
-      env: disable-xdebug=false
+      env: DISABLE_XDEBUG=false
     - php: 7.0
     - php: 7.1
-      env: disable-xdebug=false
+      env: DISABLE_XDEBUG=false
   fast_finish: true
 
 cache:
@@ -20,7 +20,7 @@ cache:
     - $HOME/.composer/cache
 
 before_script:
-  - if [[ $disable-xdebug = true ]]; then
+  - if [[ $DISABLE_XDEBUG = true ]]; then
       phpenv config-rm xdebug.ini;
     fi
   - travis_retry composer self-update
diff --git a/tests/stubs/travis.php71.stub b/tests/stubs/travis.php71.stub
index 3550efa..b312830 100644
--- a/tests/stubs/travis.php71.stub
+++ b/tests/stubs/travis.php71.stub
@@ -2,16 +2,16 @@ language: php
 
 env:
   global:
-    - disable-xdebug=true
+    - DISABLE_XDEBUG=true
 
 matrix:
   include:
     - php: hhvm
-      env: disable-xdebug=false
+      env: DISABLE_XDEBUG=false
     - php: nightly
-      env: disable-xdebug=false
+      env: DISABLE_XDEBUG=false
     - php: 7.1
-      env: disable-xdebug=false
+      env: DISABLE_XDEBUG=false
   fast_finish: true
 
 cache:
@@ -19,7 +19,7 @@ cache:
     - $HOME/.composer/cache
 
 before_script:
-  - if [[ $disable-xdebug = true ]]; then
+  - if [[ $DISABLE_XDEBUG = true ]]; then
       phpenv config-rm xdebug.ini;
     fi
   - travis_retry composer self-update
diff --git a/tests/stubs/travis.stub b/tests/stubs/travis.stub
index 0c1295f..d87093a 100644
--- a/tests/stubs/travis.stub
+++ b/tests/stubs/travis.stub
@@ -2,18 +2,18 @@ language: php
 
 env:
   global:
-    - disable-xdebug=true
+    - DISABLE_XDEBUG=true
 
 matrix:
   include:
     - php: hhvm
-      env: disable-xdebug=false
+      env: DISABLE_XDEBUG=false
     - php: nightly
-      env: disable-xdebug=false
+      env: DISABLE_XDEBUG=false
     - php: 5.6
     - php: 7.0
     - php: 7.1
-      env: disable-xdebug=false
+      env: DISABLE_XDEBUG=false
   fast_finish: true
 
 cache:
@@ -21,7 +21,7 @@ cache:
     - $HOME/.composer/cache
 
 before_script:
-  - if [[ $disable-xdebug = true ]]; then
+  - if [[ $DISABLE_XDEBUG = true ]]; then
       phpenv config-rm xdebug.ini;
     fi
   - travis_retry composer self-update
diff --git a/tests/stubs/with-phpcs/travis.stub b/tests/stubs/with-phpcs/travis.stub
index 5d6a520..f4b4f3a 100644
--- a/tests/stubs/with-phpcs/travis.stub
+++ b/tests/stubs/with-phpcs/travis.stub
@@ -2,18 +2,18 @@ language: php
 
 env:
   global:
-    - disable-xdebug=true
+    - DISABLE_XDEBUG=true
 
 matrix:
   include:
     - php: hhvm
-      env: disable-xdebug=false
+      env: DISABLE_XDEBUG=false
     - php: nightly
-      env: disable-xdebug=false
+      env: DISABLE_XDEBUG=false
     - php: 5.6
     - php: 7.0
     - php: 7.1
-      env: disable-xdebug=false
+      env: DISABLE_XDEBUG=false
   fast_finish: true
 
 cache:
@@ -21,7 +21,7 @@ cache:
     - $HOME/.composer/cache
 
 before_script:
-  - if [[ $disable-xdebug = true ]]; then
+  - if [[ $DISABLE_XDEBUG = true ]]; then
       phpenv config-rm xdebug.ini;
     fi
   - travis_retry composer self-update