Let $N \in \mathbb{N}$, let $f \in S_2(\Gamma_0(N))$ be a normalized newform, and let $K_f$ be the number field generated by the Fourier coefficients of $f$. Let $l$ be a rational prime, let $\lambda$ be a prime of $K_f$ above $l$, and let
be the $l$-adic Galois representation attached to $f$. Then for every rational prime $p$ with $p \nmid Nl$, the restriction of $\rho_{f,\lambda}$ to the inertia subgroup $I_p \subset G_{\mathbb{Q}}$ is trivial. Equivalently, $\rho_{f,\lambda}$ is unramified at every prime $p \nmid Nl$.