diff --git a/compiler/rustc_typeck/src/check/callee.rs b/compiler/rustc_typeck/src/check/callee.rs
index 1cc06b8c2e5..6cdd38664c8 100644
--- a/compiler/rustc_typeck/src/check/callee.rs
+++ b/compiler/rustc_typeck/src/check/callee.rs
@@ -350,6 +350,7 @@ fn confirm_builtin_call(
                     }
                 }
 
+                let callee_ty = self.resolve_vars_if_possible(callee_ty);
                 let mut err = type_error_struct!(
                     self.tcx.sess,
                     callee_expr.span,
diff --git a/src/test/ui/typeck/call-block.rs b/src/test/ui/typeck/call-block.rs
index 1d5244411a2..0390d7db040 100644
--- a/src/test/ui/typeck/call-block.rs
+++ b/src/test/ui/typeck/call-block.rs
@@ -1,3 +1,3 @@
 fn main() {
-    let _ = {42}(); //~ ERROR expected function, found `_`
+    let _ = {42}(); //~ ERROR expected function, found `{integer}`
 }
diff --git a/src/test/ui/typeck/call-block.stderr b/src/test/ui/typeck/call-block.stderr
index 20f61dd23ac..68984bc1c45 100644
--- a/src/test/ui/typeck/call-block.stderr
+++ b/src/test/ui/typeck/call-block.stderr
@@ -1,4 +1,4 @@
-error[E0618]: expected function, found `_`
+error[E0618]: expected function, found `{integer}`
   --> $DIR/call-block.rs:2:13
    |
 LL |     let _ = {42}();