diff --git a/src/mconnect/device.vala b/src/mconnect/device.vala
index dcd1e44..5337af5 100644
--- a/src/mconnect/device.vala
+++ b/src/mconnect/device.vala
@@ -206,9 +206,9 @@ class Device : Object {
 		cache.set_boolean(name, "paired", this.is_paired);
 		cache.set_string(name, "certificate", this.certificate);
 		cache.set_string_list(name, "outgoing_capabilities",
-							  array_list_to_list(this.outgoing_capabilities));
+							  this.outgoing_capabilities.to_array());
 		cache.set_string_list(name, "incoming_capabilities",
-							  array_list_to_list(this.incoming_capabilities));
+							  this.incoming_capabilities.to_array());
 	}
 
 	private async void greet() {
diff --git a/src/mconnect/utils.vala b/src/mconnect/utils.vala
index 2f68d54..b3d14c5 100644
--- a/src/mconnect/utils.vala
+++ b/src/mconnect/utils.vala
@@ -19,22 +19,6 @@
  */
 using Posix;
 
-/**
- * @array_list_to_list:
- * @al: Gee.ArrayList<T>
- *
- * Convert Gee.ArrayList<T> to T[]
- */
-T[] array_list_to_list<T>(Gee.ArrayList<T> al) {
-	T[] out_list = new T[al.size];
-	int i = 0;
-	foreach(var v in al) {
-		out_list[i] = v;
-		i++;
-	}
-	return out_list;
-}
-
 namespace DebugLog{
 	public bool Verbose = false;
 }