diff --git a/Source/Core/Common/Src/x64Emitter.cpp b/Source/Core/Common/Src/x64Emitter.cpp
index 022115a40a..e79f73fcca 100644
--- a/Source/Core/Common/Src/x64Emitter.cpp
+++ b/Source/Core/Common/Src/x64Emitter.cpp
@@ -768,6 +768,10 @@ void XEmitter::MOVZX(int dbits, int sbits, X64Reg dest, OpArg src)
 		Write8(0x0F);
 		Write8(0xB7);
 	}
+	else if (sbits == 32 && dbits == 64)
+	{
+		Write8(0x8B);
+	}
 	else
 	{
 		Crash();
diff --git a/Source/Core/Core/Src/PowerPC/Jit64/Jit_Integer.cpp b/Source/Core/Core/Src/PowerPC/Jit64/Jit_Integer.cpp
index 3d88d687e0..b444dbd783 100644
--- a/Source/Core/Core/Src/PowerPC/Jit64/Jit_Integer.cpp
+++ b/Source/Core/Core/Src/PowerPC/Jit64/Jit_Integer.cpp
@@ -1977,7 +1977,7 @@ void Jit64::slwx(UGeckoInstruction inst)
 		}
 		else
 		{
-			MOV(32, gpr.R(a), gpr.R(a));
+			MOVZX(64, 32, gpr.R(a).GetSimpleReg(), gpr.R(a));
 		}
 		gpr.UnlockAll();
 		gpr.UnlockAllX();