diff --git a/src/libs/kata-sys-util/src/protection.rs b/src/libs/kata-sys-util/src/protection.rs
index 1b73017366..9cb11a1178 100644
--- a/src/libs/kata-sys-util/src/protection.rs
+++ b/src/libs/kata-sys-util/src/protection.rs
@@ -277,6 +277,13 @@ pub fn available_guest_protection() -> Result<GuestProtection, ProtectionError>
     Ok(GuestProtection::NoProtection)
 }
 
+#[cfg(target_arch = "riscv64")]
+#[allow(dead_code)]
+// Guest protection is not supported on RISC-V.
+pub fn available_guest_protection() -> Result<GuestProtection, ProtectionError> {
+    Ok(GuestProtection::NoProtection)
+}
+
 #[cfg(target_arch = "x86_64")]
 #[cfg(test)]
 mod tests {