diff --git a/pcsx2/GS.cpp b/pcsx2/GS.cpp
index 744a0cfdcf..8680726393 100644
--- a/pcsx2/GS.cpp
+++ b/pcsx2/GS.cpp
@@ -123,7 +123,7 @@ u32 g_MTGSDebug = 0, g_MTGSId = 0;
 u32 CSRw;
 void gsWaitGS();
 
-extern long pDsp;
+extern uptr pDsp;
 typedef u8* PU8;
 
 PCSX2_ALIGNED16(u8 g_MTGSMem[0x2000]); // mtgs has to have its own memory