diff --git a/backend/Backend.cpp b/backend/Backend.cpp
index 15a9ff1..16e2859 100644
--- a/backend/Backend.cpp
+++ b/backend/Backend.cpp
@@ -63,7 +63,7 @@
     size_t extra_client = (z_map.size() - client_size) - avail_planes;
     if (extra_client > 0) {
       int start = 0;
-      size_t steps;
+      size_t steps = 0;
       if (client_size != 0) {
         size_t prepend = std::min((size_t)client_start, extra_client);
         size_t append = std::min(z_map.size() - (client_start + client_size),
@@ -136,6 +136,7 @@
           display->resource_manager()->ForcedScalingWithGpu());
 }
 
+// NOLINTNEXTLINE(cppcoreguidelines-avoid-non-const-global-variables)
 REGISTER_BACKEND("generic", Backend);
 
 }  // namespace android
diff --git a/backend/BackendClient.cpp b/backend/BackendClient.cpp
index 033a35c..bef536a 100644
--- a/backend/BackendClient.cpp
+++ b/backend/BackendClient.cpp
@@ -30,6 +30,7 @@
   return HWC2::Error::HasChanges;
 }
 
+// NOLINTNEXTLINE(cppcoreguidelines-avoid-non-const-global-variables)
 REGISTER_BACKEND("client", BackendClient);
 
 }  // namespace android
diff --git a/backend/BackendRCarDu.cpp b/backend/BackendRCarDu.cpp
index e85fa71..6585406 100644
--- a/backend/BackendRCarDu.cpp
+++ b/backend/BackendRCarDu.cpp
@@ -40,6 +40,7 @@
   return Backend::IsClientLayer(display, layer);
 }
 
+// NOLINTNEXTLINE(cppcoreguidelines-avoid-non-const-global-variables)
 REGISTER_BACKEND("rcar-du", BackendRCarDu);
 
 }  // namespace android
\ No newline at end of file