diff --git a/pytorch_lightning/metrics/classification/f_beta.py b/pytorch_lightning/metrics/classification/f_beta.py
index 85a0d3f736..fadfd000eb 100755
--- a/pytorch_lightning/metrics/classification/f_beta.py
+++ b/pytorch_lightning/metrics/classification/f_beta.py
@@ -212,7 +212,6 @@ class F1(FBeta):
     def __init__(
         self,
         num_classes: int = 1,
-        beta: float = 1.0,
         threshold: float = 0.5,
         average: str = "micro",
         multilabel: bool = False,
diff --git a/pytorch_lightning/metrics/functional/f_beta.py b/pytorch_lightning/metrics/functional/f_beta.py
index 5f6962d2b3..2b0ba194d5 100755
--- a/pytorch_lightning/metrics/functional/f_beta.py
+++ b/pytorch_lightning/metrics/functional/f_beta.py
@@ -110,7 +110,6 @@ def f1(
         preds: torch.Tensor,
         target: torch.Tensor,
         num_classes: int,
-        beta: float = 1.0,
         threshold: float = 0.5,
         average: str = "micro",
         multilabel: bool = False