1 files changed, 1 insertions, 1 deletions
diff --git a/build/rule b/build/rule
index 8eb6b26..e6dbd5a 100644
--- a/build/rule
+++ b/build/rule
@@ -30,7 +30,7 @@ namespace build
     std::type_index,
     prefix_multimap<std::string, std::reference_wrapper<rule>, '.'>>;
 
-  using operation_rule_map = std::unordered_map<std::string, target_rule_map>;
+  using operation_rule_map = std::unordered_map<operation_id, target_rule_map>;
 
   extern operation_rule_map rules;