diff --git a/CollaborativeCoding/metrics/recall.py b/CollaborativeCoding/metrics/recall.py
index 385f974..0443f8e 100644
--- a/CollaborativeCoding/metrics/recall.py
+++ b/CollaborativeCoding/metrics/recall.py
@@ -79,7 +79,7 @@ def __compute_macro_averaging(self, y_true, y_pred):
         recall = 0
         for i in range(self.num_classes):
             tp = (y_true[:, i] * y_pred[:, i]).sum()
-            fn = torch.sum(~y_pred[y_true[:, i].bool()].bool())
+            fn = (y_true[:, i] * (1 - y_pred[:, i])).sum()
             recall += tp / (tp + fn)
         recall /= self.num_classes
 
@@ -87,7 +87,7 @@ def __compute_macro_averaging(self, y_true, y_pred):
 
     def __compute_micro_averaging(self, y_true, y_pred):
         true_positives = (y_true * y_pred).sum()
-        false_negatives = torch.sum(~y_pred[y_true.bool()].bool())
+        false_negatives = (y_true * (1 - y_pred)).sum()
 
         recall = true_positives / (true_positives + false_negatives)
         return recall