diff --git a/src/shims/foreign_items.rs b/src/shims/foreign_items.rs
index 5d46f3c05c3..2de0baf2947 100644
--- a/src/shims/foreign_items.rs
+++ b/src/shims/foreign_items.rs
@@ -194,7 +194,7 @@ fn lookup_exported_symbol(
 
         let instance = instance_and_crate.map(|ic| ic.0);
         // Cache it and load its MIR, if found.
-        this.machine.exported_symbols_cache.insert(link_name, instance);
+        this.machine.exported_symbols_cache.try_insert(link_name, instance).unwrap();
         instance.map(|instance| this.load_mir(instance.def, None)).transpose()
     }