diff --git a/src/N98/Util/Exec.php b/src/N98/Util/Exec.php
index e9ba05971..c268ccc83 100644
--- a/src/N98/Util/Exec.php
+++ b/src/N98/Util/Exec.php
@@ -38,7 +38,7 @@ public static function run($command, &$output = null, &$returnCode = null)
             throw new RuntimeException($message);
         }
 
-        if (OperatingSystem::isBashCompatibleShell() && self::isPipefailOptionAvailable()) {
+        if (self::isPipefailOptionAvailable()) {
             $command = self::SET_O_PIPEFAIL . $command;
         }
 
diff --git a/src/N98/Util/OperatingSystem.php b/src/N98/Util/OperatingSystem.php
index ebfd3b94e..435d29fd7 100644
--- a/src/N98/Util/OperatingSystem.php
+++ b/src/N98/Util/OperatingSystem.php
@@ -165,6 +165,7 @@ public static function getCurrentPhpBinary()
     }
 
     /**
+     * @deprecated 5.1.1 No longer used by internal code
      * @return bool
      */
     public static function isBashCompatibleShell()