diff --git a/Source/Core/Core/HW/MMIO.cpp b/Source/Core/Core/HW/MMIO.cpp
index 667165b8b7..39ae3187c3 100644
--- a/Source/Core/Core/HW/MMIO.cpp
+++ b/Source/Core/Core/HW/MMIO.cpp
@@ -230,8 +230,9 @@ ReadHandlingMethod<T>* ReadToSmaller(Mapping* mmio, u32 high_part_addr, u32 low_
 	mmio->GetHandlerForRead(low_part_addr, &low_part);
 
 	// TODO(delroth): optimize
-	return ComplexRead<T>([high_part, low_part](u32 addr) {
-		return ((T)high_part->Read(addr) << (8 * sizeof (ST))) | low_part->Read(addr);
+	return ComplexRead<T>([=](u32 addr) {
+		return ((T)high_part->Read(high_part_addr) << (8 * sizeof (ST)))
+			| low_part->Read(low_part_addr);
 	});
 }
 
@@ -246,9 +247,9 @@ WriteHandlingMethod<T>* WriteToSmaller(Mapping* mmio, u32 high_part_addr, u32 lo
 	mmio->GetHandlerForWrite(low_part_addr, &low_part);
 
 	// TODO(delroth): optimize
-	return ComplexWrite<T>([high_part, low_part](u32 addr, T val) {
-		high_part->Write(addr, val >> (8 * sizeof (ST)));
-		low_part->Write(addr, (ST)val);
+	return ComplexWrite<T>([=](u32 addr, T val) {
+		high_part->Write(high_part_addr, val >> (8 * sizeof (ST)));
+		low_part->Write(low_part_addr, (ST)val);
 	});
 }