diff --git a/db/memtable.h b/db/memtable.h
index 0aeadce80..961707008 100644
--- a/db/memtable.h
+++ b/db/memtable.h
@@ -138,7 +138,7 @@ class MemTable {
 
   // As a cheap version of `ApproximateMemoryUsage()`, this function doens't
   // require external synchronization. The value may be less accurate though
-  size_t ApproximateMemoryUsageFast() {
+  size_t ApproximateMemoryUsageFast() const {
     return approximate_memory_usage_.load(std::memory_order_relaxed);
   }
 
diff --git a/db/memtable_list.cc b/db/memtable_list.cc
index 93ab2e77c..2d4c514e1 100644
--- a/db/memtable_list.cc
+++ b/db/memtable_list.cc
@@ -280,7 +280,7 @@ void MemTableListVersion::Remove(MemTable* m,
 }
 
 // return the total memory usage assuming the oldest flushed memtable is dropped
-size_t MemTableListVersion::ApproximateMemoryUsageExcludingLast() {
+size_t MemTableListVersion::ApproximateMemoryUsageExcludingLast() const {
   size_t total_memtable_size = 0;
   for (auto& memtable : memlist_) {
     total_memtable_size += memtable->ApproximateMemoryUsage();
@@ -566,7 +566,7 @@ size_t MemTableList::ApproximateUnflushedMemTablesMemoryUsage() {
 
 size_t MemTableList::ApproximateMemoryUsage() { return current_memory_usage_; }
 
-size_t MemTableList::ApproximateMemoryUsageExcludingLast() {
+size_t MemTableList::ApproximateMemoryUsageExcludingLast() const {
   size_t usage =
       current_memory_usage_excluding_last_.load(std::memory_order_relaxed);
   return usage;
diff --git a/db/memtable_list.h b/db/memtable_list.h
index d78a8b5ea..aad4fddea 100644
--- a/db/memtable_list.h
+++ b/db/memtable_list.h
@@ -162,7 +162,7 @@ class MemTableListVersion {
   // excluding the last MemTable in memlist_history_. The reason for excluding
   // the last MemTable is to see if dropping the last MemTable will keep total
   // memory usage above or equal to max_write_buffer_size_to_maintain_
-  size_t ApproximateMemoryUsageExcludingLast();
+  size_t ApproximateMemoryUsageExcludingLast() const;
 
   bool MemtableLimitExceeded(size_t usage);
 
@@ -267,7 +267,7 @@ class MemTableList {
   size_t ApproximateMemoryUsage();
 
   // Returns the cached current_memory_usage_excluding_last_ value
-  size_t ApproximateMemoryUsageExcludingLast();
+  size_t ApproximateMemoryUsageExcludingLast() const;
 
   // Update current_memory_usage_excluding_last_ from MemtableListVersion
   void UpdateMemoryUsageExcludingLast();
diff --git a/db/write_batch.cc b/db/write_batch.cc
index 350c1a1c0..71104ea35 100644
--- a/db/write_batch.cc
+++ b/db/write_batch.cc
@@ -1784,14 +1784,28 @@ class MemTableInserter : public WriteBatch::Handler {
     // check if memtable_list size exceeds max_write_buffer_size_to_maintain
     if (trim_history_scheduler_ != nullptr) {
       auto* cfd = cf_mems_->current();
-      assert(cfd != nullptr);
-      if (cfd->ioptions()->max_write_buffer_size_to_maintain > 0 &&
-          cfd->mem()->ApproximateMemoryUsageFast() +
-                  cfd->imm()->ApproximateMemoryUsageExcludingLast() >=
-              static_cast<size_t>(
-                  cfd->ioptions()->max_write_buffer_size_to_maintain) &&
-          cfd->imm()->MarkTrimHistoryNeeded()) {
-        trim_history_scheduler_->ScheduleWork(cfd);
+
+      assert(cfd);
+      assert(cfd->ioptions());
+
+      const size_t size_to_maintain = static_cast<size_t>(
+          cfd->ioptions()->max_write_buffer_size_to_maintain);
+
+      if (size_to_maintain > 0) {
+        MemTableList* const imm = cfd->imm();
+        assert(imm);
+
+        if (imm->NumFlushed() > 0) {
+          const MemTable* const mem = cfd->mem();
+          assert(mem);
+
+          if (mem->ApproximateMemoryUsageFast() +
+                      imm->ApproximateMemoryUsageExcludingLast() >=
+                  size_to_maintain &&
+              imm->MarkTrimHistoryNeeded()) {
+            trim_history_scheduler_->ScheduleWork(cfd);
+          }
+        }
       }
     }
   }