diff --git a/pyproximal/proximal/L21.py b/pyproximal/proximal/L21.py
index 03ad8f2..478b96a 100644
--- a/pyproximal/proximal/L21.py
+++ b/pyproximal/proximal/L21.py
@@ -66,7 +66,6 @@ def __init__(self, ndim: int, sigma: float = 1.0) -> None:
     def __call__(self, x: NDArray) -> float:
         x = x.reshape(self.ndim, len(x) // self.ndim)
         f = self.sigma * np.sum(np.sqrt(np.sum(np.abs(x) ** 2, axis=0)))
-        print(f"f = {f}")
         return float(f)
 
     @_check_tau