diff --git a/LEGO1/lego/legoomni/src/worlds/registrationbook.cpp b/LEGO1/lego/legoomni/src/worlds/registrationbook.cpp
index 7f10890e..82b229fa 100644
--- a/LEGO1/lego/legoomni/src/worlds/registrationbook.cpp
+++ b/LEGO1/lego/legoomni/src/worlds/registrationbook.cpp
@@ -300,6 +300,8 @@ MxLong RegistrationBook::HandleControl(LegoControlManagerNotificationParam& p_pa
 			FUN_100775c0(i);
 		}
 	}
+
+	return 1;
 }
 
 // FUNCTION: LEGO1 0x100775c0