diff --git a/LEGO1/lego/legoomni/include/act1state.h b/LEGO1/lego/legoomni/include/act1state.h
index bf66085e..8b1a09b1 100644
--- a/LEGO1/lego/legoomni/include/act1state.h
+++ b/LEGO1/lego/legoomni/include/act1state.h
@@ -56,7 +56,7 @@ class Act1State : public LegoState {
 		inline const MxString* GetName() const { return &m_name; }
 
 		// FUNCTION: LEGO1 0x100344d0
-		MxS32 Serialize(LegoFile* p_file)
+		MxResult Serialize(LegoFile* p_file)
 		{
 			if (p_file->IsWriteMode()) {
 				p_file->FUN_10006030(m_name);
@@ -71,7 +71,7 @@ class Act1State : public LegoState {
 				p_file->ReadVector3(m_point3);
 			}
 
-			return 0;
+			return SUCCESS;
 		}
 
 	private: