diff --git a/src/Command/BuiltIn/DeployCommand.php b/src/Command/BuiltIn/DeployCommand.php
index a5cc2d5..c932463 100644
--- a/src/Command/BuiltIn/DeployCommand.php
+++ b/src/Command/BuiltIn/DeployCommand.php
@@ -173,7 +173,7 @@ class DeployCommand extends AbstractCommand
             return true;
         }
 
-        if ($this->runtime->getWorkingHost()) {
+        if ($this->runtime->getWorkingHost() !== null) {
             $output->writeln(sprintf('    Starting <fg=black;options=bold>%s</> tasks on host <fg=black;options=bold>%s</>:', $this->getStageName(), $this->runtime->getWorkingHost()));
         } else {
             $output->writeln(sprintf('    Starting <fg=black;options=bold>%s</> tasks:', $this->getStageName()));
diff --git a/src/Runtime/Runtime.php b/src/Runtime/Runtime.php
index b7b5aec..83a49cc 100644
--- a/src/Runtime/Runtime.php
+++ b/src/Runtime/Runtime.php
@@ -49,7 +49,7 @@ class Runtime
     /**
      * @var string|null The host being deployed to
      */
-    protected $workingHost;
+    protected $workingHost = null;
 
     /**
      * @var string|null The Release ID
@@ -420,7 +420,7 @@ class Runtime
         }
 
         $hostPath = rtrim($this->getEnvOption('host_path'), '/');
-        if ($jail && $this->getReleaseId()) {
+        if ($jail && $this->getReleaseId() !== null) {
             $cmdDelegate = sprintf('cd %s/releases/%s && %s', $hostPath, $this->getReleaseId(), $cmdDelegate);
         } elseif ($jail) {
             $cmdDelegate = sprintf('cd %s && %s', $hostPath, $cmdDelegate);
diff --git a/src/Task/BuiltIn/FS/AbstractFileTask.php b/src/Task/BuiltIn/FS/AbstractFileTask.php
index fef53fc..c2e4685 100644
--- a/src/Task/BuiltIn/FS/AbstractFileTask.php
+++ b/src/Task/BuiltIn/FS/AbstractFileTask.php
@@ -59,11 +59,11 @@ abstract class AbstractFileTask extends AbstractTask
             '%environment%' => $this->runtime->getEnvironment(),
         ];
 
-        if ($this->runtime->getWorkingHost()) {
+        if ($this->runtime->getWorkingHost() !== null) {
             $mapping['%host%'] = $this->runtime->getWorkingHost();
         }
 
-        if ($this->runtime->getReleaseId()) {
+        if ($this->runtime->getReleaseId() !== null) {
             $mapping['%release%'] = $this->runtime->getReleaseId();
         }