diff --git a/include/hpp/manipulation/path-planner/states-path-finder.hh b/include/hpp/manipulation/path-planner/states-path-finder.hh
index 2d2dd62bccd3a2a7a52580822de6f84f3be35f08..bff6a6d251945a75e77f80d46b7a6b79ff321f1b 100644
--- a/include/hpp/manipulation/path-planner/states-path-finder.hh
+++ b/include/hpp/manipulation/path-planner/states-path-finder.hh
@@ -20,6 +20,7 @@
 #ifndef HPP_MANIPULATION_PATH_PLANNER_STATES_PATH_FINDER_HH
 #define HPP_MANIPULATION_PATH_PLANNER_STATES_PATH_FINDER_HH
 
+#include <unordered_map>
 #include <hpp/core/config-projector.hh>
 #include <hpp/core/config-validations.hh>
 #include <hpp/core/fwd.hh>