diff --git a/compiler/rustc_codegen_cranelift/src/abi/mod.rs b/compiler/rustc_codegen_cranelift/src/abi/mod.rs
index 133e7e26c0de..97a19b8976d3 100644
--- a/compiler/rustc_codegen_cranelift/src/abi/mod.rs
+++ b/compiler/rustc_codegen_cranelift/src/abi/mod.rs
@@ -58,9 +58,6 @@ pub(crate) fn conv_to_call_conv(
         // Cranelift doesn't currently have anything for this.
         CanonAbi::RustPreserveNone => default_call_conv,
 
-        // 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.