diff --git a/compiler/rustc_middle/src/mir/interpret/error.rs b/compiler/rustc_middle/src/mir/interpret/error.rs
index 3e307979f2d..8e4a17bfa65 100644
--- a/compiler/rustc_middle/src/mir/interpret/error.rs
+++ b/compiler/rustc_middle/src/mir/interpret/error.rs
@@ -492,9 +492,6 @@ pub fn downcast_ref<T: Any>(&self) -> Option<&T> {
     }
 }
 
-#[cfg(all(target_arch = "x86_64", target_pointer_width = "64"))]
-static_assert_size!(InterpError<'_>, 88);
-
 pub enum InterpError<'tcx> {
     /// The program caused undefined behavior.
     UndefinedBehavior(UndefinedBehaviorInfo<'tcx>),