diff --git a/src/abi/mod.rs b/src/abi/mod.rs
index 09d71f5dd557..5a46f79e2ba0 100644
--- a/src/abi/mod.rs
+++ b/src/abi/mod.rs
@@ -56,6 +56,9 @@ pub(crate) fn conv_to_call_conv(
         CanonAbi::Rust | CanonAbi::C => default_call_conv,
         CanonAbi::RustCold => CallConv::Cold,
 
+        // Cranelift doesn't currently have anything for this.
+        CanonAbi::RustPreserveNone => default_call_conv,
+
         // Functions with this calling convention can only be called from assembly, but it is
         // possible to declare an `extern "custom"` block, so the backend still needs a calling
         // convention for declaring foreign functions.