diff --git a/src/action.cc b/src/action.cc
index ebe63bf..5ad180c 100644
--- a/src/action.cc
+++ b/src/action.cc
@@ -1,5 +1,7 @@
 #include "action.hh"
 
+#include <string>
+
 Action::Action(std::string name, bool has_target) {
     this->name = name;
     this->has_target = has_target;
diff --git a/src/lib.hh b/src/lib.hh
index 8ecf9a8..ac5d9df 100644
--- a/src/lib.hh
+++ b/src/lib.hh
@@ -1,5 +1,6 @@
 #include "action.hh"
 #include "prep/prep.hh"
+#include "role.hh"
 
 bool playerBelongsToRoom(Player *player, Room *room);
 bool actionBelongsToRole(Role *role, const Action *action);
diff --git a/src/prep/prep.cc b/src/prep/prep.cc
index 271aaf4..ff0baa1 100644
--- a/src/prep/prep.cc
+++ b/src/prep/prep.cc
@@ -5,12 +5,6 @@
 #include <cstdint>
 #include <initializer_list>
 
-Role::Role(std::initializer_list<Action> actions): Role(std::vector<Action>(actions)) {
-}
-
-Role::Role(std::vector<Action> actions): actions(actions) {
-}
-
 Player::Player(uint32_t id, std::string username, Role role, PlayerStatus playerStatus):
     id(id),
     username(username),
diff --git a/src/prep/prep.hh b/src/prep/prep.hh
index 5637e12..35e43a5 100644
--- a/src/prep/prep.hh
+++ b/src/prep/prep.hh
@@ -28,18 +28,10 @@ enum PlayerStatus {
     VOTED_OUT,
 };
 
-struct Role;
 struct Player;
 struct Room;
 struct Event;
 
-struct Role {
-    std::vector<Action> actions;
-
-    Role(std::initializer_list<Action> actions);
-    Role(std::vector<Action> actions);
-};
-
 struct Player {
     uint32_t id;
     std::string username;
diff --git a/src/role.cc b/src/role.cc
new file mode 100644
index 0000000..9ed7d94
--- /dev/null
+++ b/src/role.cc
@@ -0,0 +1,10 @@
+#include "role.hh"
+
+#include <initializer_list>
+#include <vector>
+
+Role::Role(std::initializer_list<Action> actions): Role(std::vector<Action>(actions)) {
+}
+
+Role::Role(std::vector<Action> actions): actions(actions) {
+}
diff --git a/src/role.hh b/src/role.hh
new file mode 100644
index 0000000..d52330f
--- /dev/null
+++ b/src/role.hh
@@ -0,0 +1,15 @@
+#ifndef ROLE_HH
+#define ROLE_HH
+
+#include "action.hh"
+
+#include <initializer_list>
+#include <vector>
+
+struct Role {
+    std::vector<Action> actions;
+    Role(std::initializer_list<Action> actions);
+    Role(std::vector<Action> actions);
+};
+
+#endif  // ROLE_HH