diff --git a/src/main/java/cc/fascinated/backend/controller/PasteController.java b/src/main/java/cc/fascinated/backend/controller/PasteController.java
index bc56b63..c29c4d9 100644
--- a/src/main/java/cc/fascinated/backend/controller/PasteController.java
+++ b/src/main/java/cc/fascinated/backend/controller/PasteController.java
@@ -21,7 +21,7 @@ public class PasteController {
     }
 
     @PostMapping(value = "/upload")
-    public ResponseEntity<?> uploadPaste(@RequestBody String content, @RequestHeader(HttpHeaders.CONTENT_TYPE) String contentType) {
+    public ResponseEntity<?> uploadPaste(@RequestBody String content, @RequestHeader(value = HttpHeaders.CONTENT_TYPE, required = false) String contentType) {
         String id = pasteService.createPaste(content, contentType);
         return ResponseEntity.ok(Map.of("key", id));
     }