diff --git a/MouseClass.h b/MouseClass.h
index d7e79a57..dca7c9b1 100644
--- a/MouseClass.h
+++ b/MouseClass.h
@@ -50,6 +50,9 @@ class TabClass : public SidebarClass, public INoticeSink
 	void Activate(int control = 1)
 		{ JMP_THIS(0x6D04F0); }
 
+	int SetTab(int tabIndex)
+		{ JMP_THIS(0x6A7590); }
+
 	TabDataClass TabData;
 	CDTimerClass unknown_timer_552C;
 	CDTimerClass InsufficientFundsBlinkTimer;