diff --git a/src/lib/detectors/exdet.py b/src/lib/detectors/exdet.py
index 0bedac9..bcfae42 100755
--- a/src/lib/detectors/exdet.py
+++ b/src/lib/detectors/exdet.py
@@ -46,7 +46,7 @@ class ExdetDetector(BaseDetector):
                       center_thresh=self.opt.center_thresh,
                       aggr_weight=self.opt.aggr_weight)
       else:
-        dets = self.decode(t_heat, l_heat, b_heat, r_heat, c_heat, K=opt.K,
+        dets = self.decode(t_heat, l_heat, b_heat, r_heat, c_heat, K=self.opt.K,
                       scores_thresh=self.opt.scores_thresh,
                       center_thresh=self.opt.center_thresh,
                       aggr_weight=self.opt.aggr_weight)
@@ -129,4 +129,4 @@ class ExdetDetector(BaseDetector):
       for bbox in results[j]:
         if bbox[4] > self.opt.vis_thresh:
           debugger.add_coco_bbox(bbox[:4], j - 1, bbox[4], img_id='exdet')
-    debugger.show_all_imgs(pause=self.pause)
\ No newline at end of file
+    debugger.show_all_imgs(pause=self.pause)