diff --git a/GPU/D3D11/StateMappingD3D11.cpp b/GPU/D3D11/StateMappingD3D11.cpp
index c0ce1d4b59..b6266dbdcf 100644
--- a/GPU/D3D11/StateMappingD3D11.cpp
+++ b/GPU/D3D11/StateMappingD3D11.cpp
@@ -221,6 +221,7 @@ void DrawEngineD3D11::ApplyDrawState(int prim) {
 		if (gstate_c.Supports(GPU_SUPPORTS_LOGIC_OP)) {
 			// Logic Ops
 			if (gstate.isLogicOpEnabled() && gstate.getLogicOp() != GE_LOGIC_COPY) {
+				keys_.blend.blendEnable = false;  // Can't have both blend & logic op - although I think the PSP can!
 				keys_.blend.logicOpEnable = true;
 				keys_.blend.logicOp = logicOps[gstate.getLogicOp()];
 			}
diff --git a/ext/native/thin3d/thin3d_d3d11.cpp b/ext/native/thin3d/thin3d_d3d11.cpp
index 40a0016185..480fdcaf40 100644
--- a/ext/native/thin3d/thin3d_d3d11.cpp
+++ b/ext/native/thin3d/thin3d_d3d11.cpp
@@ -206,7 +206,9 @@ D3D11DrawContext::D3D11DrawContext(ID3D11Device *device, ID3D11DeviceContext *de
 	HRESULT result = device_->CheckFeatureSupport(D3D11_FEATURE_D3D11_OPTIONS, &options, sizeof(options));
 	if (SUCCEEDED(result)) {
 		if (options.OutputMergerLogicOp) {
-			caps_.logicOpSupported = true;
+			// Actually, need to check that the format supports logic ops as well.
+			// Which normal UNORM formats don't seem to do. So meh.
+			// caps_.logicOpSupported = true;
 		}
 	}