diff --git a/core/primitives/src/lib.rs b/core/primitives/src/lib.rs
index 32221064a5d..ebb5d19c538 100644
--- a/core/primitives/src/lib.rs
+++ b/core/primitives/src/lib.rs
@@ -61,5 +61,5 @@ pub use near_primitives_core::chains;
 fn failing_fuzzer() {
     // This fuzzer always fails. It is used as a sanity-check that our clusterfuzz instance
     // is working properly, as it has silently stopped working quite a few times already.
-    bolero::check!().for_each(|_| panic!("The expected-to-fail fuzzer actually failed"))
+    bolero::check!().for_each(|_| -> () { panic!("The expected-to-fail fuzzer actually failed") })
 }