diff --git a/fvm/src/kernel/default.rs b/fvm/src/kernel/default.rs
index 5e5c0a9b9d..4601d8f6d3 100644
--- a/fvm/src/kernel/default.rs
+++ b/fvm/src/kernel/default.rs
@@ -593,17 +593,6 @@ where
         }))
     }
 
-    fn verify_post(&self, verify_info: &WindowPoStVerifyInfo) -> Result<bool> {
-        let t = self
-            .call_manager
-            .charge_gas(self.call_manager.price_list().on_verify_post(verify_info))?;
-
-        // This is especially important to catch as, otherwise, a bad "post" could be undisputable.
-        t.record(catch_and_log_panic("verifying post", || {
-            verify_post(verify_info)
-        }))
-    }
-
     fn verify_consensus_fault(
         &self,
         h1: &[u8],
diff --git a/fvm/src/kernel/mod.rs b/fvm/src/kernel/mod.rs
index 13ccffc719..8572d8b2a8 100644
--- a/fvm/src/kernel/mod.rs
+++ b/fvm/src/kernel/mod.rs
@@ -304,9 +304,6 @@ pub trait CryptoOps {
         pieces: &[PieceInfo],
     ) -> Result<Cid>;
 
-    /// Verifies a window proof of spacetime.
-    fn verify_post(&self, verify_info: &WindowPoStVerifyInfo) -> Result<bool>;
-
     /// Verifies that two block headers provide proof of a consensus fault:
     /// - both headers mined by the same actor
     /// - headers are different
diff --git a/fvm/src/syscalls/crypto.rs b/fvm/src/syscalls/crypto.rs
index e389e87847..993db0f7fc 100644
--- a/fvm/src/syscalls/crypto.rs
+++ b/fvm/src/syscalls/crypto.rs
@@ -9,7 +9,6 @@ use fvm_shared::crypto::signature::{
 use fvm_shared::piece::PieceInfo;
 use fvm_shared::sector::{
     AggregateSealVerifyProofAndInfos, RegisteredSealProof, ReplicaUpdateInfo, SealVerifyInfo,
-    WindowPoStVerifyInfo,
 };
 use fvm_shared::sys;
 use num_traits::FromPrimitive;
@@ -124,25 +123,6 @@ pub fn compute_unsealed_sector_cid(
     context.memory.write_cid(&cid, cid_off, cid_len)
 }
 
-/// Verifies a window proof of spacetime.
-///
-/// The return i32 indicates the status code of the verification:
-///  - 0: verification ok.
-///  - -1: verification failed.
-pub fn verify_post(
-    context: Context<'_, impl Kernel>,
-    info_off: u32, // WindowPoStVerifyInfo,
-    info_len: u32,
-) -> Result<i32> {
-    let info = context
-        .memory
-        .read_cbor::<WindowPoStVerifyInfo>(info_off, info_len)?;
-    context
-        .kernel
-        .verify_post(&info)
-        .map(|v| if v { 0 } else { -1 })
-}
-
 /// Verifies that two block headers provide proof of a consensus fault:
 /// - both headers mined by the same actor
 /// - headers are different
diff --git a/fvm/src/syscalls/filecoin.rs b/fvm/src/syscalls/filecoin.rs
new file mode 100644
index 0000000000..f8fcd388d6
--- /dev/null
+++ b/fvm/src/syscalls/filecoin.rs
@@ -0,0 +1,25 @@
+use fvm_shared::sector::WindowPoStVerifyInfo;
+
+use crate::kernel::FilecoinKernel;
+
+use super::Context;
+use crate::kernel::Result;
+
+/// Verifies a window proof of spacetime.
+///
+/// The return i32 indicates the status code of the verification:
+///  - 0: verification ok.
+///  - -1: verification failed.
+pub fn verify_post(
+    context: Context<'_, impl FilecoinKernel>,
+    info_off: u32, // WindowPoStVerifyInfo,
+    info_len: u32,
+) -> Result<i32> {
+    let info = context
+        .memory
+        .read_cbor::<WindowPoStVerifyInfo>(info_off, info_len)?;
+    context
+        .kernel
+        .verify_post(&info)
+        .map(|v| if v { 0 } else { -1 })
+}
diff --git a/fvm/src/syscalls/mod.rs b/fvm/src/syscalls/mod.rs
index 6aff7e7cd0..9fc845fdef 100644
--- a/fvm/src/syscalls/mod.rs
+++ b/fvm/src/syscalls/mod.rs
@@ -19,6 +19,7 @@ mod context;
 mod crypto;
 mod debug;
 mod event;
+mod filecoin;
 mod gas;
 mod ipld;
 mod network;
@@ -301,7 +302,6 @@ where
             crypto::recover_secp_public_key,
         )?;
         linker.bind("crypto", "hash", crypto::hash)?;
-        linker.bind("crypto", "verify_post", crypto::verify_post)?;
         linker.bind(
             "crypto",
             "compute_unsealed_sector_cid",
@@ -355,7 +355,7 @@ where
         self.0.bind_syscalls(linker)?;
 
         // Now bind the crypto syscalls.
-        linker.bind("crypto", "verify_post", crypto::verify_post)?;
+        linker.bind("crypto", "verify_post", filecoin::verify_post)?;
 
         Ok(())
     }