diff --git a/src/EnvironmentSetCommand.php b/src/EnvironmentSetCommand.php
index 4a04fca..2c9179f 100644
--- a/src/EnvironmentSetCommand.php
+++ b/src/EnvironmentSetCommand.php
@@ -46,7 +46,7 @@ public function handle(): void
             );
 
             // Use system env file path if the argument env file path is not provided.
-            $envFilePath = $envFilePath ?? App::environmentFilePath();
+            $envFilePath = $envFilePath ? $envFilePath : App::environmentFilePath();
             $this->info("The following environment file is used: '" . $envFilePath . "'");
         } catch (InvalidArgumentException $e) {
             $this->error($e->getMessage());