diff --git a/src/Diagnose/PHPStanDiagnoseExtension.php b/src/Diagnose/PHPStanDiagnoseExtension.php
index 000f9aa0da..7a8df87f51 100644
--- a/src/Diagnose/PHPStanDiagnoseExtension.php
+++ b/src/Diagnose/PHPStanDiagnoseExtension.php
@@ -72,6 +72,9 @@ public function print(Output $output): void
 		$output->writeLineFormatted('');
 
 		$output->writeLineFormatted('<info>Discovered Composer project roots:</info>');
+		if (count($this->composerAutoloaderProjectPaths) === 0) {
+			$output->writeLineFormatted('None');
+		}
 		foreach ($this->composerAutoloaderProjectPaths as $composerAutoloaderProjectPath) {
 			$output->writeLineFormatted($composerAutoloaderProjectPath);
 		}