1 files changed, 3 insertions, 2 deletions
diff --git a/build/rule b/build/rule
index 32e8c66..04d3650 100644
--- a/build/rule
+++ b/build/rule
@@ -10,9 +10,10 @@
 #include <functional>     // reference_wrapper
 #include <unordered_map>
 
+#include <butl/prefix-map>
+
 #include <build/target>
 #include <build/operation>
-#include <build/prefix-map>
 
 namespace build
 {
@@ -28,7 +29,7 @@ namespace build
 
   using target_rule_map = std::unordered_map<
     std::type_index,
-    prefix_multimap<std::string, std::reference_wrapper<rule>, '.'>>;
+    butl::prefix_multimap<std::string, std::reference_wrapper<rule>, '.'>>;
 
   using operation_rule_map = std::unordered_map<operation_id, target_rule_map>;