diff --git a/keras/backend/tensorflow/nn.py b/keras/backend/tensorflow/nn.py
index 4d6433aed51..807f0206439 100644
--- a/keras/backend/tensorflow/nn.py
+++ b/keras/backend/tensorflow/nn.py
@@ -40,8 +40,8 @@ def softsign(x):
     return tf.nn.softsign(x)
 
 
-def silu(x, beta=1.0):
-    return tf.nn.silu(x, beta=beta)
+def silu(x):
+    return tf.nn.silu(x)
 
 
 def log_sigmoid(x):
diff --git a/keras/backend/torch/nn.py b/keras/backend/torch/nn.py
index 5d0ea6cc271..af7aba02ddd 100644
--- a/keras/backend/torch/nn.py
+++ b/keras/backend/torch/nn.py
@@ -47,9 +47,9 @@ def softsign(x):
     return tnn.softsign(x)
 
 
-def silu(x, beta=1.0):
+def silu(x):
     x = convert_to_tensor(x)
-    return x * sigmoid(beta * x)
+    return tnn.silu(x)
 
 
 def log_sigmoid(x):