diff --git a/src/shader_recompiler/backend/spirv/emit_spirv.cpp b/src/shader_recompiler/backend/spirv/emit_spirv.cpp
index 6b0d7228b..036df24d8 100644
--- a/src/shader_recompiler/backend/spirv/emit_spirv.cpp
+++ b/src/shader_recompiler/backend/spirv/emit_spirv.cpp
@@ -32,6 +32,8 @@ static constexpr spv::ExecutionMode GetInputPrimitiveType(AmdGpu::PrimitiveType
         return spv::ExecutionMode::Triangles;
     case AmdGpu::PrimitiveType::AdjTriangleList:
         return spv::ExecutionMode::InputTrianglesAdjacency;
+    case AmdGpu::PrimitiveType::AdjLineList:
+        return spv::ExecutionMode::InputLinesAdjacency;
     default:
         UNREACHABLE_MSG("Unknown input primitive type {}", u32(type));
     }
diff --git a/src/shader_recompiler/backend/spirv/spirv_emit_context.cpp b/src/shader_recompiler/backend/spirv/spirv_emit_context.cpp
index 7c25d1477..e20cfeae2 100644
--- a/src/shader_recompiler/backend/spirv/spirv_emit_context.cpp
+++ b/src/shader_recompiler/backend/spirv/spirv_emit_context.cpp
@@ -50,6 +50,8 @@ static constexpr u32 NumVertices(AmdGpu::PrimitiveType type) {
         return 3u;
     case AmdGpu::PrimitiveType::AdjTriangleList:
         return 6u;
+    case AmdGpu::PrimitiveType::AdjLineList:
+        return 4u;
     default:
         UNREACHABLE();
     }