diff --git a/Tests/ApplicationTest.php b/Tests/ApplicationTest.php
index 469353505..4f6e6cb96 100644
--- a/Tests/ApplicationTest.php
+++ b/Tests/ApplicationTest.php
@@ -79,6 +79,7 @@ protected function tearDown(): void
             pcntl_signal(\SIGTERM, \SIG_DFL);
             pcntl_signal(\SIGUSR1, \SIG_DFL);
             pcntl_signal(\SIGUSR2, \SIG_DFL);
+            pcntl_signal(\SIGALRM, \SIG_DFL);
         }
     }
 
diff --git a/Tests/ConsoleEventsTest.php b/Tests/ConsoleEventsTest.php
index 9c04d2706..408f8c0d3 100644
--- a/Tests/ConsoleEventsTest.php
+++ b/Tests/ConsoleEventsTest.php
@@ -39,6 +39,7 @@ protected function tearDown(): void
             pcntl_signal(\SIGTERM, \SIG_DFL);
             pcntl_signal(\SIGUSR1, \SIG_DFL);
             pcntl_signal(\SIGUSR2, \SIG_DFL);
+            pcntl_signal(\SIGALRM, \SIG_DFL);
         }
     }
 
diff --git a/Tests/SignalRegistry/SignalRegistryTest.php b/Tests/SignalRegistry/SignalRegistryTest.php
index f997f7c1d..92d500f9e 100644
--- a/Tests/SignalRegistry/SignalRegistryTest.php
+++ b/Tests/SignalRegistry/SignalRegistryTest.php
@@ -27,6 +27,7 @@ protected function tearDown(): void
         pcntl_signal(\SIGTERM, \SIG_DFL);
         pcntl_signal(\SIGUSR1, \SIG_DFL);
         pcntl_signal(\SIGUSR2, \SIG_DFL);
+        pcntl_signal(\SIGALRM, \SIG_DFL);
     }
 
     public function testOneCallbackForASignalSignalIsHandled()