diff --git a/compiler/rustc_trait_selection/src/traits/select/mod.rs b/compiler/rustc_trait_selection/src/traits/select/mod.rs
index 440ed2b46320b..04ccd0d73e3d9 100644
--- a/compiler/rustc_trait_selection/src/traits/select/mod.rs
+++ b/compiler/rustc_trait_selection/src/traits/select/mod.rs
@@ -1544,7 +1544,8 @@ impl<'cx, 'tcx> SelectionContext<'cx, 'tcx> {
             //
             // FIXME(#132279): This is still incorrect as we treat opaque types
             // and default associated items differently between these two modes.
-            TypingMode::PostAnalysis | TypingMode::Codegen => true,
+            TypingMode::PostAnalysis => true,
+            TypingMode::Codegen => false,
         }
     }