diff --git a/lib/private/files/cache/cache.php b/lib/private/files/cache/cache.php
index 8831320bcee0..5438bdad5cbf 100644
--- a/lib/private/files/cache/cache.php
+++ b/lib/private/files/cache/cache.php
@@ -596,6 +596,7 @@ public function calculateFolderSize($path, $entry = null) {
 				'WHERE `parent` = ? AND `storage` = ?';
 			$result = \OC_DB::executeAudited($sql, array($id, $this->getNumericStorageId()));
 			if ($row = $result->fetchRow()) {
+				$result->closeCursor();
 				list($sum, $min, $unencryptedSum) = array_values($row);
 				$sum = 0 + $sum;
 				$min = 0 + $min;
@@ -618,6 +619,8 @@ public function calculateFolderSize($path, $entry = null) {
 				if ($totalSize !== -1 and $unencryptedSum > 0) {
 					$totalSize = $unencryptedSum;
 				}
+			} else {
+				$result->closeCursor();
 			}
 		}
 		return $totalSize;
diff --git a/lib/private/files/cache/homecache.php b/lib/private/files/cache/homecache.php
index 2b3967c8807d..ad7f587b8b6d 100644
--- a/lib/private/files/cache/homecache.php
+++ b/lib/private/files/cache/homecache.php
@@ -35,6 +35,7 @@ public function calculateFolderSize($path, $entry = null) {
 				'WHERE `parent` = ? AND `storage` = ? AND `size` >= 0';
 			$result = \OC_DB::executeAudited($sql, array($id, $this->getNumericStorageId()));
 			if ($row = $result->fetchRow()) {
+				$result->closeCursor();
 				list($sum, $unencryptedSum) = array_values($row);
 				$totalSize = 0 + $sum;
 				$unencryptedSize = 0 + $unencryptedSum;