diff --git a/Core/MIPS/x86/Jit.cpp b/Core/MIPS/x86/Jit.cpp
index 84d270e00d..e381efc04e 100644
--- a/Core/MIPS/x86/Jit.cpp
+++ b/Core/MIPS/x86/Jit.cpp
@@ -290,7 +290,13 @@ void Jit::UpdateRoundingMode(XEmitter *emitter)
 		// This is the most common situation.
 		emitter->TEST(32, M(&mips_->fcr31), Imm32(0x01000003));
 		FixupBranch skip = emitter->J_CC(CC_Z);
+#ifdef _M_X64
+		// TODO: Move the hasSetRounding flag somewhere we can reach it through the context pointer, or something.
+		emitter->MOV(64, R(RAX), Imm64((uintptr_t)&js.hasSetRounding));
+		emitter->MOV(8, MatR(RAX), Imm8(1));
+#else
 		emitter->MOV(8, M(&js.hasSetRounding), Imm8(1));
+#endif
 		emitter->SetJumpTarget(skip);
 	}
 }
diff --git a/Windows/GEDebugger/SimpleGLWindow.cpp b/Windows/GEDebugger/SimpleGLWindow.cpp
index 74a4da56cd..8f24b65179 100644
--- a/Windows/GEDebugger/SimpleGLWindow.cpp
+++ b/Windows/GEDebugger/SimpleGLWindow.cpp
@@ -69,7 +69,7 @@ static const char basic_vs[] =
 SimpleGLWindow::SimpleGLWindow(HWND wnd)
 	: hWnd_(wnd), valid_(false), drawProgram_(nullptr), tex_(0), flags_(0), zoom_(false),
 	  dragging_(false), offsetX_(0), offsetY_(0), reformatBuf_(nullptr) {
-	SetWindowLongPtr(wnd, GWLP_USERDATA, (LONG) this);
+	SetWindowLongPtr(wnd, GWLP_USERDATA, (LONG_PTR) this);
 }
 
 SimpleGLWindow::~SimpleGLWindow() {
diff --git a/Windows/W32Util/PropertySheet.cpp b/Windows/W32Util/PropertySheet.cpp
index 1254b64b0b..0ca68dcedd 100644
--- a/Windows/W32Util/PropertySheet.cpp
+++ b/Windows/W32Util/PropertySheet.cpp
@@ -150,7 +150,7 @@ namespace W32Util
 				}
 				LPARAM l = ((LPPROPSHEETPAGE)lParam)->lParam;
 				tab = (Tab *)l;
-				SetWindowLongPtr(hDlg, GWLP_USERDATA, (DWORD_PTR)l);
+				SetWindowLongPtr(hDlg, GWLP_USERDATA, (LONG_PTR)l);
 				tab->Init(hDlg);
 			}
 			break;