diff --git a/src/torchmetrics/functional/classification/matthews_corrcoef.py b/src/torchmetrics/functional/classification/matthews_corrcoef.py
index 93c21f2535e..45e0238dae5 100644
--- a/src/torchmetrics/functional/classification/matthews_corrcoef.py
+++ b/src/torchmetrics/functional/classification/matthews_corrcoef.py
@@ -66,11 +66,11 @@ def _matthews_corrcoef_reduce(confmat: Tensor) -> Tensor:
     if denom == 0 and confmat.numel() == 4:
         if fn == 0 and tn == 0:
             a, b = tp, fp
-        if fp == 0 and tn == 0:
+        elif fp == 0 and tn == 0:
             a, b = tp, fn
-        if tp == 0 and fn == 0:
+        elif tp == 0 and fn == 0:
             a, b = tn, fp
-        if tp == 0 and fp == 0:
+        elif tp == 0 and fp == 0:
             a, b = tn, fn
         eps = torch.tensor(torch.finfo(torch.float32).eps, dtype=torch.float32, device=confmat.device)
         numerator = torch.sqrt(eps) * (a - b)