diff --git a/tests/ProfilingDataTest.php b/tests/ProfilingDataTest.php
index ac0171f..a08d93e 100644
--- a/tests/ProfilingDataTest.php
+++ b/tests/ProfilingDataTest.php
@@ -9,14 +9,20 @@ class ProfilingDataTest extends TestCase
 {
     public function testExcludeAllEnv()
     {
+        // 'REQUEST_TIME_FLOAT' isn't available before 5.4.0
+        // https://www.php.net/manual/en/reserved.variables.server.php
+        if (!isset($_SERVER['REQUEST_TIME_FLOAT'])) {
+            $_SERVER['REQUEST_TIME_FLOAT'] = microtime(true);
+        }
+
         $_ENV['TEST_EXCLUDE_ENV'] = 'TEST';
 
-        $config = new Config([
+        $config = new Config(array(
             'profiler.exclude-all-env' => true,
-        ]);
+        ));
         $profilingData = new ProfilingData($config);
 
-        $profile = ['example' => 'data'];
+        $profile = array('example' => 'data');
         $result = $profilingData->getProfilingData($profile);
 
         $this->assertEmpty($result['meta']['env']);
@@ -26,12 +32,12 @@ public function testNotExcludeAllEnv()
     {
         $_ENV['TEST_EXCLUDE_ENV'] = 'TEST';
 
-        $config = new Config([
+        $config = new Config(array(
             'profiler.exclude-all-env' => false,
-        ]);
+        ));
         $profilingData = new ProfilingData($config);
 
-        $profile = ['example' => 'data'];
+        $profile = array('example' => 'data');
         $result = $profilingData->getProfilingData($profile);
 
         $this->assertEquals('TEST', $result['meta']['env']['TEST_EXCLUDE_ENV']);