diff --git a/app/bootstrap.php b/app/bootstrap.php
index ba62b296bd49c..70b632537a75b 100644
--- a/app/bootstrap.php
+++ b/app/bootstrap.php
@@ -54,8 +54,16 @@
     && isset($_SERVER['HTTP_ACCEPT'])
     && strpos($_SERVER['HTTP_ACCEPT'], 'text/html') !== false
 ) {
-    \Magento\Framework\Profiler::applyConfig(
-        (isset($_SERVER['MAGE_PROFILER']) && strlen($_SERVER['MAGE_PROFILER'])) ? $_SERVER['MAGE_PROFILER'] : trim(file_get_contents(BP . '/var/profiler.flag')),
+    $profilerConfig = isset($_SERVER['MAGE_PROFILER']) && strlen($_SERVER['MAGE_PROFILER'])
+        ? $_SERVER['MAGE_PROFILER']
+        : trim(file_get_contents(BP . '/var/profiler.flag'));
+
+    if ($profilerConfig) {
+        $profilerConfig = json_decode($profilerConfig, true) ?: $profilerConfig;
+    }
+
+    Magento\Framework\Profiler::applyConfig(
+        $profilerConfig,
         BP,
         !empty($_SERVER['HTTP_X_REQUESTED_WITH']) && $_SERVER['HTTP_X_REQUESTED_WITH'] == 'XMLHttpRequest'
     );