1 files changed, 4 insertions, 4 deletions
diff --git a/src/client/util/DragManager.ts b/src/client/util/DragManager.ts
index 70c40c54e..a6ad0f1b3 100644
--- a/src/client/util/DragManager.ts
+++ b/src/client/util/DragManager.ts
@@ -181,7 +181,7 @@ export namespace DragManager {
         }
     };
 
-    export function MakeDropTarget(element: HTMLElement, dropFunc: (e: Event, de: DropEvent) => void, doc?: Doc, preDropFunc?: (e: Event, de: DropEvent, targetAction: dropActionType) => void): DragDropDisposer {
+    export function MakeDropTarget(element: HTMLElement, dropFunc: (e: Event, de: DropEvent) => void, doc: Doc, preDropFunc?: (e: Event, de: DropEvent, targetAction: dropActionType) => void): DragDropDisposer {
         if ('canDrop' in element.dataset) {
             throw new Error("Element is already droppable, can't make it droppable again");
         }
@@ -189,13 +189,13 @@ export namespace DragManager {
         const handler = (e: Event) => dropFunc(e, (e as CustomEvent<DropEvent>).detail);
         const preDropHandler = (e: Event) => {
             const de = (e as CustomEvent<DropEvent>).detail;
-            (preDropFunc ?? defaultPreDropFunc)(e, de, StrCast(doc?.dropAction) as dropActionType);
+            (preDropFunc ?? defaultPreDropFunc)(e, de, StrCast(doc.dropAction) as dropActionType);
         };
         element.addEventListener('dashOnDrop', handler);
-        doc && element.addEventListener('dashPreDrop', preDropHandler);
+        element.addEventListener('dashPreDrop', preDropHandler);
         return () => {
             element.removeEventListener('dashOnDrop', handler);
-            doc && element.removeEventListener('dashPreDrop', preDropHandler);
+            element.removeEventListener('dashPreDrop', preDropHandler);
             delete element.dataset.canDrop;
         };
     }