diff --git a/build.xml b/build.xml
index 251ded0..b88df78 100644
--- a/build.xml
+++ b/build.xml
@@ -4,11 +4,10 @@
 	<!-- ============================================ -->
 	<!-- Target: check                                -->
 	<!-- ============================================ -->
-	<target name="check" depends="lint, phpcs, phpstan, tests">
-		<exec command="vendor/bin/paratest tests" checkreturn="true" passthru="true"/>
-	</target>
+	<target name="check" depends="lint, phpcs, phpstan, tests"/>
+
 	<!-- ============================================ -->
-	<!-- Target: fix                                -->
+	<!-- Target: fix                                  -->
 	<!-- ============================================ -->
 	<target name="fix">
 		<exec command="composer normalize" passthru="true" checkreturn="true"/>
@@ -42,6 +41,6 @@
 	<!-- Target: tests                                -->
 	<!-- ============================================ -->
 	<target name="tests">
-		<exec command="vendor/bin/phpunit tests" passthru="true" checkreturn="true" level="error"/>
+		<exec command="vendor/bin/paratest tests" passthru="true" checkreturn="true" level="error"/>
 	</target>
 </project>
diff --git a/src/Http/HttpClient.php b/src/Http/HttpClient.php
index 4e57cf6..7cfa340 100644
--- a/src/Http/HttpClient.php
+++ b/src/Http/HttpClient.php
@@ -74,10 +74,14 @@ public function request(
         $statusCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
 
         if ($config->getLogFilePath() !== null) {
-            $headersContents = [];
+            $headersContents = ['EMPTY'];
 
-            foreach ($headers as $key => $value) {
-                $headersContents[] = sprintf('%s:%s', $key, $value);
+            if (count($headers) > 0) {
+                $headersContents = [];
+
+                foreach ($headers as $key => $value) {
+                    $headersContents[] = sprintf('%s:%s', $key, $value);
+                }
             }
 
             $rootDir = dirname($config->getLogFilePath());