diff --git a/mshv-ioctls/src/ioctls/system.rs b/mshv-ioctls/src/ioctls/system.rs
index 976e5df7..7e5c5931 100644
--- a/mshv-ioctls/src/ioctls/system.rs
+++ b/mshv-ioctls/src/ioctls/system.rs
@@ -299,19 +299,6 @@ impl Mshv {
         self.create_vm_with_type(VmType::Normal)
     }
 
-    /// Check if MSHV API is stable
-    pub fn check_stable(&self) -> Result<bool> {
-        // Safe because we know `self.hv` is a real MSHV fd as this module is the only one that
-        // creates mshv objects.
-        let cap: u32 = MSHV_CAP_CORE_API_STABLE;
-        // SAFETY: IOCTL call with the correct types.
-        let ret = unsafe { ioctl_with_ref(&self.hv, MSHV_CHECK_EXTENSION(), &cap) };
-        match ret {
-            0 => Ok(false),
-            r if r > 0 => Ok(true),
-            _ => Err(errno::Error::last()),
-        }
-    }
     /// X86 specific call to get list of supported MSRS
     pub fn get_msr_index_list(&self) -> Result<MsrList> {
         /* return all the MSRs we currently support */
diff --git a/mshv-ioctls/src/mshv_ioctls.rs b/mshv-ioctls/src/mshv_ioctls.rs
index 8683a284..12b0d716 100644
--- a/mshv-ioctls/src/mshv_ioctls.rs
+++ b/mshv-ioctls/src/mshv_ioctls.rs
@@ -3,7 +3,6 @@
 // SPDX-License-Identifier: Apache-2.0 OR BSD-3-Clause
 //
 use mshv_bindings::*;
-ioctl_iow_nr!(MSHV_CHECK_EXTENSION, MSHV_IOCTL, 0x00, u32);
 ioctl_iow_nr!(MSHV_CREATE_VP, MSHV_IOCTL, 0x04, mshv_create_vp);
 ioctl_iowr_nr!(MSHV_GET_VP_REGISTERS, MSHV_IOCTL, 0x05, mshv_vp_registers);
 ioctl_iow_nr!(MSHV_SET_VP_REGISTERS, MSHV_IOCTL, 0x06, mshv_vp_registers);