diff --git a/soh/soh/Enhancements/savestates.h b/soh/soh/Enhancements/savestates.h
index 2cedbcc1d..4ac142172 100644
--- a/soh/soh/Enhancements/savestates.h
+++ b/soh/soh/Enhancements/savestates.h
@@ -32,6 +32,8 @@ typedef struct SaveStateRequest {
     RequestType type;
 } SaveStateRequest;
 
+class SaveState;
+
 class SaveStateMgr {
     friend class SaveState;
   private: