diff --git a/src/hotspot/share/services/memReporter.cpp b/src/hotspot/share/services/memReporter.cpp
index a277fec5c80..235ce96dba7 100644
--- a/src/hotspot/share/services/memReporter.cpp
+++ b/src/hotspot/share/services/memReporter.cpp
@@ -236,7 +236,6 @@ void MemSummaryReporter::report_summary_of_type(MEMFLAGS flag,
         MallocMemory* thread_stack_memory = _malloc_snapshot->by_type(mtThreadStack);
         const char* scale = current_scale();
         // report thread count
-        assert(ThreadStackTracker::thread_count() == 0, "Not used");
         out->print_cr("%27s (threads #" SIZE_FORMAT ")", " ", thread_stack_memory->malloc_count());
         out->print("%27s (Stack: " SIZE_FORMAT "%s", " ",
           amount_in_current_scale(thread_stack_memory->malloc_size()), scale);