diff --git a/crates/rustc_codegen_spirv/src/linker/specializer.rs b/crates/rustc_codegen_spirv/src/linker/specializer.rs
index 9c058d484e..6895d618a3 100644
--- a/crates/rustc_codegen_spirv/src/linker/specializer.rs
+++ b/crates/rustc_codegen_spirv/src/linker/specializer.rs
@@ -746,7 +746,7 @@ impl<'a, S: Specialization> InferCx<'a, S> {
     }
 }
 
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
 enum InferOperand {
     Unknown,
     Var(InferVar),