diff --git a/src/KingSystem/Physics/CMakeLists.txt b/src/KingSystem/Physics/CMakeLists.txt
index 256da303..1b5c0b54 100644
--- a/src/KingSystem/Physics/CMakeLists.txt
+++ b/src/KingSystem/Physics/CMakeLists.txt
@@ -29,6 +29,8 @@ target_sources(uking PRIVATE
   RigidBody/physRigidBodyMotionProxy.h
   RigidBody/physRigidBodyParam.cpp
   RigidBody/physRigidBodyParam.h
+  RigidBody/physRigidBodyRequestMgr.cpp
+  RigidBody/physRigidBodyRequestMgr.h
   RigidBody/physRigidBodyResource.cpp
   RigidBody/physRigidBodyResource.h
   RigidBody/physRigidBodySetParam.cpp
diff --git a/src/KingSystem/Physics/RigidBody/physRigidBody.cpp b/src/KingSystem/Physics/RigidBody/physRigidBody.cpp
index 017437a9..12d8e37a 100644
--- a/src/KingSystem/Physics/RigidBody/physRigidBody.cpp
+++ b/src/KingSystem/Physics/RigidBody/physRigidBody.cpp
@@ -7,6 +7,7 @@
 #include "KingSystem/Physics/RigidBody/physRigidBodyMotion.h"
 #include "KingSystem/Physics/RigidBody/physRigidBodyMotionProxy.h"
 #include "KingSystem/Physics/RigidBody/physRigidBodyParam.h"
+#include "KingSystem/Physics/RigidBody/physRigidBodyRequestMgr.h"
 #include "KingSystem/Physics/System/physMemSystem.h"
 #include "KingSystem/Physics/physConversions.h"
 
diff --git a/src/KingSystem/Physics/RigidBody/physRigidBodyRequestMgr.cpp b/src/KingSystem/Physics/RigidBody/physRigidBodyRequestMgr.cpp
new file mode 100644
index 00000000..e3cbc936
--- /dev/null
+++ b/src/KingSystem/Physics/RigidBody/physRigidBodyRequestMgr.cpp
@@ -0,0 +1 @@
+#include "KingSystem/Physics/RigidBody/physRigidBodyRequestMgr.h"
diff --git a/src/KingSystem/Physics/RigidBody/physRigidBodyRequestMgr.h b/src/KingSystem/Physics/RigidBody/physRigidBodyRequestMgr.h
new file mode 100644
index 00000000..8d66ec71
--- /dev/null
+++ b/src/KingSystem/Physics/RigidBody/physRigidBodyRequestMgr.h
@@ -0,0 +1,12 @@
+#pragma once
+
+namespace ksys::phys {
+
+class RigidBody;
+
+class RigidBodyRequestMgr {
+public:
+    void sub_7100FA6C8C(bool, RigidBody*);
+};
+
+}  // namespace ksys::phys
diff --git a/src/KingSystem/Physics/System/physMemSystem.h b/src/KingSystem/Physics/System/physMemSystem.h
index 908940f1..63652c5a 100644
--- a/src/KingSystem/Physics/System/physMemSystem.h
+++ b/src/KingSystem/Physics/System/physMemSystem.h
@@ -13,16 +13,12 @@ class ContactMgr;
 class GroupFilter;
 class MaterialTable;
 class RigidBody;
+class RigidBodyRequestMgr;
 class RigidContactPoints;
 class RigidContactPointsEx;
 class SystemData;
 class SystemGroupHandler;
 
-// FIXME: obviously incomplete. Also this should be moved to its own header
-struct RigidBodyRequestMgr {
-    void sub_7100FA6C8C(bool, RigidBody*);
-};
-
 enum class IsIndoorStage {
     No,
     Yes,