diff --git a/apps/dav/lib/Files/FileSearchBackend.php b/apps/dav/lib/Files/FileSearchBackend.php
index d52eb60729a9a..419a0c5ed3b51 100644
--- a/apps/dav/lib/Files/FileSearchBackend.php
+++ b/apps/dav/lib/Files/FileSearchBackend.php
@@ -386,7 +386,7 @@ private function transformSearchOperation(Operator $operator) {
 				}
 
 				return new SearchComparison(
-					ISearchComparison::COMPARE_DEFINED,
+					$trimmedType,
 					$field,
 					$this->castValue($property, $value ?? ''),
 					$extra ?? ''
diff --git a/lib/public/Files/Search/ISearchComparison.php b/lib/public/Files/Search/ISearchComparison.php
index d10747686188e..36fee5251350f 100644
--- a/lib/public/Files/Search/ISearchComparison.php
+++ b/lib/public/Files/Search/ISearchComparison.php
@@ -35,7 +35,7 @@ interface ISearchComparison extends ISearchOperator {
 	public const COMPARE_LESS_THAN_EQUAL = 'lte';
 	public const COMPARE_LIKE = 'like';
 	public const COMPARE_LIKE_CASE_SENSITIVE = 'clike';
-	public const COMPARE_DEFINED = 'defined';
+	public const COMPARE_DEFINED = 'is-defined';
 
 	public const HINT_PATH_EQ_HASH = 'path_eq_hash'; // transform `path = "$path"` into `path_hash = md5("$path")`, on by default