diff --git a/db/compaction_picker_universal.cc b/db/compaction_picker_universal.cc
index 9975ef80cde317c8730c34d80f832b7a43f3a841..960c65d2b956f1ca06e9cb17ba384e86fa476687 100644
--- a/db/compaction_picker_universal.cc
+++ b/db/compaction_picker_universal.cc
@@ -603,9 +603,9 @@ Compaction* UniversalCompactionPicker::PickCompactionToReduceSortedRuns(
 
   CompactionReason compaction_reason;
   if (max_number_of_files_to_compact == UINT_MAX) {
-    compaction_reason = CompactionReason::kUniversalSortedRunNum;
-  } else {
     compaction_reason = CompactionReason::kUniversalSizeRatio;
+  } else {
+    compaction_reason = CompactionReason::kUniversalSortedRunNum;
   }
   return new Compaction(
       vstorage, ioptions_, mutable_cf_options, std::move(inputs), output_level,
diff --git a/db/listener_test.cc b/db/listener_test.cc
index 5b5f2266b31a178e7a3d61efafd57f9d8102c6e5..86646fdde02452b31ae1e57038c021dc821941f0 100644
--- a/db/listener_test.cc
+++ b/db/listener_test.cc
@@ -528,7 +528,7 @@ TEST_F(EventListenerTest, CompactionReasonUniversal) {
 
   ASSERT_GT(listener->compaction_reasons_.size(), 0);
   for (auto compaction_reason : listener->compaction_reasons_) {
-    ASSERT_EQ(compaction_reason, CompactionReason::kUniversalSortedRunNum);
+    ASSERT_EQ(compaction_reason, CompactionReason::kUniversalSizeRatio);
   }
 
   options.level0_file_num_compaction_trigger = 8;