diff --git a/Cargo.toml b/Cargo.toml
index 3b02a5c..bfc3cb1 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "hydrus-api"
-version = "0.3.4"
+version = "0.3.5"
 authors = ["trivernis <trivernis@protonmail.com>"]
 edition = "2018"
 license = "Apache-2.0"
diff --git a/src/utils.rs b/src/utils.rs
index 95f308a..8263999 100644
--- a/src/utils.rs
+++ b/src/utils.rs
@@ -7,11 +7,13 @@ pub fn string_list_to_json_array(l: Vec<String>) -> String {
 pub fn number_list_to_json_array<T: ToString>(l: Vec<T>) -> String {
     format!(
         "[{}]",
-        l.into_iter().fold(String::from(""), |acc, val| format!(
-            "{},{}",
-            acc,
-            val.to_string()
-        ))
+        l.into_iter()
+            .fold(String::from(""), |acc, val| format!(
+                "{},{}",
+                acc,
+                val.to_string()
+            ))
+            .trim_start_matches(",")
     )
 }
 
diff --git a/tests/client/test_searching_and_fetching_files.rs b/tests/client/test_searching_and_fetching_files.rs
index 5d4b146..98816d7 100644
--- a/tests/client/test_searching_and_fetching_files.rs
+++ b/tests/client/test_searching_and_fetching_files.rs
@@ -23,6 +23,13 @@ async fn it_fetches_file_metadata() {
     assert!(response.is_ok()); // Even if the file doesn't exist it still returns some information about it
 }
 
+#[tokio::test]
+async fn it_fetches_file_metadata_by_id() {
+    let client = common::get_client();
+    let response = client.get_file_metadata(vec![1], vec![]).await;
+    assert!(response.is_ok()); // Even if the file doesn't exist it still returns some information about it
+}
+
 #[tokio::test]
 async fn it_fetches_single_files() {
     let client = common::get_client();