diff --git a/compiler/rustc_codegen_llvm/src/back/write.rs b/compiler/rustc_codegen_llvm/src/back/write.rs
index b45dab18fab8a..65a5cef3aaef9 100644
--- a/compiler/rustc_codegen_llvm/src/back/write.rs
+++ b/compiler/rustc_codegen_llvm/src/back/write.rs
@@ -599,7 +599,7 @@ pub(crate) unsafe fn extract_return_type<'a>(
     ) -> &'a Value {
     //let llmod = module.module_llvm.llmod();
     let context = llvm::LLVMGetModuleContext(llmod);
-    let f_type = LLVMTypeOf(fnc);
+    let _f_type = LLVMTypeOf(fnc);
     //dbg!("Unpacking", fnc_name.clone());
     //dbg!("From: ", f_type, " into ", u_type);