diff --git a/src/base/allocator/partition_alloc_support.cc b/src/base/allocator/partition_alloc_support.cc
index 4a07b5a252..1152c4ca97 100644
--- a/src/base/allocator/partition_alloc_support.cc
+++ b/src/base/allocator/partition_alloc_support.cc
@@ -1289,10 +1289,10 @@ void PartitionAllocSupport::ReconfigureAfterFeatureListInit(
 #endif  // PA_BUILDFLAG(USE_STARSCAN)
 
 #if PA_BUILDFLAG(USE_PARTITION_ALLOC_AS_MALLOC)
+#if PA_BUILDFLAG(USE_STARSCAN)
   partition_alloc::internal::StackTopRegistry::Get().NotifyThreadCreated(
       partition_alloc::internal::GetStackTop());
 
-#if PA_BUILDFLAG(USE_STARSCAN)
   // Non-quarantinable partition is dealing with hot V8's zone allocations.
   // In case PCScan is enabled in Renderer, enable thread cache on this
   // partition. At the same time, thread cache on the main(malloc) partition