diff --git a/apps/files_external/lib/Command/Config.php b/apps/files_external/lib/Command/Config.php
index 375181d35e..87d11cbdfa 100644
--- a/apps/files_external/lib/Command/Config.php
+++ b/apps/files_external/lib/Command/Config.php
@@ -74,7 +74,7 @@ class Config extends Base {
 		}
 
 		$value = $input->getArgument('value');
-		if ($value) {
+		if ($value !== null) {
 			$this->setOption($mount, $key, $value, $output);
 		} else {
 			$this->getOption($mount, $key, $output);