diff --git a/config/runner.yml b/config/runner.yml
index 3fd350c1..db6fbc43 100644
--- a/config/runner.yml
+++ b/config/runner.yml
@@ -3,7 +3,7 @@ runner:
 
 drupal:
   core: "8"
-  root: "./build"
+  root: "build"
   base-url: "http://127.0.0.1:8888"
   site:
     name: "Site name"
diff --git a/src/Commands/DrupalCommands.php b/src/Commands/DrupalCommands.php
index aee45fbd..da893954 100644
--- a/src/Commands/DrupalCommands.php
+++ b/src/Commands/DrupalCommands.php
@@ -87,8 +87,8 @@ public function siteInstall(array $options = [
     {
         return $this->taskExec($this->getBin('drush'))
             ->option('-y')
+            ->rawArg("--root=$(pwd)/".$options['root'])
             ->options([
-                'root' => $options['root'],
                 'site-name' => $options['site-name'],
                 'site-mail' => $options['site-mail'],
                 'locale' => $options['site-locale'],
diff --git a/tests/fixtures/setup.yml b/tests/fixtures/setup.yml
index ecc7219f..0609d946 100644
--- a/tests/fixtures/setup.yml
+++ b/tests/fixtures/setup.yml
@@ -3,7 +3,7 @@
     test1: ${drupal.root}
     test2: ${drupal.core}
   expected: >
-    test1: ./build
+    test1: build
     test2: 8
 
 - command: setup:behat
diff --git a/tests/fixtures/simulation.yml b/tests/fixtures/simulation.yml
index 00e0a67e..22bb038c 100644
--- a/tests/fixtures/simulation.yml
+++ b/tests/fixtures/simulation.yml
@@ -2,13 +2,13 @@
   configuration: []
   composer: ''
   contains:
-    - "[Simulator] Running ./vendor/bin/drush -y --root=./build --site-name='Site name' --site-mail=info@example.org --locale=en --account-mail=admin@example.org --account-name=admin --account-pass=admin --exclude=./build --db-url='mysql://root:root@127.0.0.1:3306/drupal' site-install standard"
+    - "[Simulator] Running ./vendor/bin/drush -y --root=$(pwd)/build --site-name='Site name' --site-mail=info@example.org --locale=en --account-mail=admin@example.org --account-name=admin --account-pass=admin --exclude=build --db-url='mysql://root:root@127.0.0.1:3306/drupal' site-install standard"
 
 - command: 'drupal:site-install --site-name="Test site"'
   configuration: []
   composer: ''
   contains:
-    - "[Simulator] Running ./vendor/bin/drush -y --root=./build --site-name='Test site' --site-mail=info@example.org --locale=en --account-mail=admin@example.org --account-name=admin --account-pass=admin --exclude=./build --db-url='mysql://root:root@127.0.0.1:3306/drupal' site-install standard"
+    - "[Simulator] Running ./vendor/bin/drush -y --root=$(pwd)/build --site-name='Test site' --site-mail=info@example.org --locale=en --account-mail=admin@example.org --account-name=admin --account-pass=admin --exclude=build --db-url='mysql://root:root@127.0.0.1:3306/drupal' site-install standard"
 
 - command: 'drupal:site-install --site-mail="test@example.com" --site-profile=minimal'
   configuration: []
@@ -20,29 +20,29 @@
 - command: 'drupal:site-install'
   configuration:
     drupal:
-      root: './test'
+      root: 'test'
       site:
         profile: 'minimal'
   composer: ''
   contains:
-    - "./vendor/bin/drush -y --root=./test"
+    - "./vendor/bin/drush -y --root=$(pwd)/test"
     - "site-install minimal"
 
-- command: 'drupal:site-install --root="./overridden"'
+- command: 'drupal:site-install --root="overridden"'
   configuration:
     drupal:
       root: './test'
   composer: ''
   contains:
-    - "./vendor/bin/drush -y --root=./overridden"
+    - "./vendor/bin/drush -y --root=$(pwd)/overridden"
 
-- command: 'drupal:site-install --root="./overridden"'
+- command: 'drupal:site-install --root="overridden"'
   configuration:
     runner:
       bin-dir: "./bin"
   composer: ''
   contains:
-    - "./bin/drush -y --root=./overridden"
+    - "./bin/drush -y --root=$(pwd)/overridden"
 
 - command: 'changelog:generate'
   configuration:
@@ -84,11 +84,11 @@
       "type": "drupal-module"
     }
   contains:
-    - "symlink('.', './build/modules/custom/bar')"
+    - "symlink('.', 'build/modules/custom/bar')"
     - "[Simulator] Running ./vendor/bin/run 'setup:behat'"
     - "[Simulator] Running ./vendor/bin/run 'setup:phpunit'"
-    - "WriteConfiguration('./build/sites/default/drushrc.php'"
-    - "AppendConfiguration('./build/sites/default/default.settings.php'"
+    - "WriteConfiguration('build/sites/default/drushrc.php'"
+    - "AppendConfiguration('build/sites/default/default.settings.php'"
 
 - command: 'drupal:component-scaffold'
   configuration:
@@ -112,7 +112,7 @@
       "type": "drupal-module"
     }
   contains:
-    - "symlink('.', './build/sites/all/modules/custom/bar')"
+    - "symlink('.', 'build/sites/all/modules/custom/bar')"
 
 - command: 'drupal:component-scaffold'
   configuration:
@@ -124,4 +124,4 @@
       "type": "drupal-theme"
     }
   contains:
-    - "symlink('.', './build/sites/all/themes/custom/bar')"
+    - "symlink('.', 'build/sites/all/themes/custom/bar')"
diff --git a/tests/fixtures/tasks/replace-config-tokens/task.yml b/tests/fixtures/tasks/replace-config-tokens/task.yml
index d2aea03e..163053ef 100644
--- a/tests/fixtures/tasks/replace-config-tokens/task.yml
+++ b/tests/fixtures/tasks/replace-config-tokens/task.yml
@@ -3,7 +3,7 @@
     two:
       three: ${drupal.core}
   expected:
-    one: "./build"
+    one: "build"
     two:
       three: "8"
 
@@ -19,4 +19,4 @@
 - source:
     concat: "${drupal.core}/${drupal.root}"
   expected:
-    concat: "8/./build"
+    concat: "8/build"