diff --git a/src/shader_recompiler/backend/spirv/emit_spirv_warp.cpp b/src/shader_recompiler/backend/spirv/emit_spirv_warp.cpp
index bd4ac066..38afd90f 100644
--- a/src/shader_recompiler/backend/spirv/emit_spirv_warp.cpp
+++ b/src/shader_recompiler/backend/spirv/emit_spirv_warp.cpp
@@ -11,7 +11,7 @@ Id SubgroupScope(EmitContext& ctx) {
 }
 
 Id EmitWarpId(EmitContext& ctx) {
-    return ctx.OpLoad(ctx.U32[1], ctx.subgroup_id);
+    UNREACHABLE();
 }
 
 Id EmitLaneId(EmitContext& ctx) {
diff --git a/src/shader_recompiler/backend/spirv/spirv_emit_context.cpp b/src/shader_recompiler/backend/spirv/spirv_emit_context.cpp
index f7b30052..8ca8b7a3 100644
--- a/src/shader_recompiler/backend/spirv/spirv_emit_context.cpp
+++ b/src/shader_recompiler/backend/spirv/spirv_emit_context.cpp
@@ -225,7 +225,6 @@ void EmitContext::DefineInputs(const Info& info) {
         break;
     }
     case Stage::Fragment:
-        subgroup_id = DefineVariable(U32[1], spv::BuiltIn::SubgroupId, spv::StorageClass::Input);
         subgroup_local_invocation_id = DefineVariable(
             U32[1], spv::BuiltIn::SubgroupLocalInvocationId, spv::StorageClass::Input);
         Decorate(subgroup_local_invocation_id, spv::Decoration::Flat);
diff --git a/src/shader_recompiler/backend/spirv/spirv_emit_context.h b/src/shader_recompiler/backend/spirv/spirv_emit_context.h
index 34c13d3f..2aa1bf78 100644
--- a/src/shader_recompiler/backend/spirv/spirv_emit_context.h
+++ b/src/shader_recompiler/backend/spirv/spirv_emit_context.h
@@ -180,7 +180,6 @@ public:
 
     Id workgroup_id{};
     Id local_invocation_id{};
-    Id subgroup_id{};
     Id subgroup_local_invocation_id{};
     Id image_u32{};