diff --git a/lib/Service/ReverseGeoCoderService.php b/lib/Service/ReverseGeoCoderService.php
index 23b21e9ca..30236e5bf 100644
--- a/lib/Service/ReverseGeoCoderService.php
+++ b/lib/Service/ReverseGeoCoderService.php
@@ -166,6 +166,7 @@ public function buildKDTree($force = false): void {
 		$persister->convert($tree, $kdTreeTmpFileName);
 		$kdTreeString = file_get_contents($kdTreeTmpFileName);
 		$this->geoNameFolder()->newFile('cities1000.bin', $kdTreeString);
+		unlink($kdTreeTmpFileName);
 	}
 
 	private function loadKdTree(): void {
@@ -179,5 +180,6 @@ private function loadKdTree(): void {
 		file_put_contents($kdTreeTmpFileName, $kdTreeFileContent);
 		$fsTree = new FSKDTree($kdTreeTmpFileName, new ItemFactory());
 		$this->fsSearcher = new NearestSearch($fsTree);
+		unlink($kdTreeTmpFileName);
 	}
 }