diff --git a/library/core/src/ub_checks.rs b/library/core/src/ub_checks.rs
index ff6b2d3053956..b8c2a9ddbcc12 100644
--- a/library/core/src/ub_checks.rs
+++ b/library/core/src/ub_checks.rs
@@ -69,9 +69,11 @@ macro_rules! assert_unsafe_precondition {
                 }
             }
 
+            if cfg!(debug_assertions) {
             if ::core::ub_checks::$kind() {
                 precondition_check($($arg,)*);
             }
+            }
         }
     };
 }