diff --git a/source/lib/rocprof-sys/library/runtime.cpp b/source/lib/rocprof-sys/library/runtime.cpp
index db082710..373234c3 100644
--- a/source/lib/rocprof-sys/library/runtime.cpp
+++ b/source/lib/rocprof-sys/library/runtime.cpp
@@ -63,11 +63,11 @@ auto&
 get_sampling_on_child_threads_history(int64_t _idx = utility::get_thread_index())
 {
     static auto _v = utility::get_filled_array<ROCPROFSYS_MAX_THREADS>(
-        []() { return utility::get_reserved_vector<bool>(32); });
+        []() { return utility::get_reserved_vector<bool>(64); });
 
     if(_idx >= ROCPROFSYS_MAX_THREADS)
     {
-        static thread_local auto _tl_v = utility::get_reserved_vector<bool>(32);
+        static thread_local auto _tl_v = utility::get_reserved_vector<bool>(128);
         return _tl_v;
     }