diff --git a/services/surfaceflinger/tests/unittests/LayerHistoryIntegrationTest.cpp b/services/surfaceflinger/tests/unittests/LayerHistoryIntegrationTest.cpp
index 01762c1..110f324 100644
--- a/services/surfaceflinger/tests/unittests/LayerHistoryIntegrationTest.cpp
+++ b/services/surfaceflinger/tests/unittests/LayerHistoryIntegrationTest.cpp
@@ -1026,6 +1026,7 @@
 };
 
 TEST_F(SmallAreaDetectionTest, SmallDirtyLayer) {
+    SET_FLAG_FOR_TEST(flags::enable_small_area_detection, true);
     auto layer = createLegacyAndFrontedEndLayer(1);
 
     nsecs_t time = systemTime();
@@ -1043,6 +1044,7 @@
 }
 
 TEST_F(SmallAreaDetectionTest, NotSmallDirtyLayer) {
+    SET_FLAG_FOR_TEST(flags::enable_small_area_detection, true);
     auto layer = createLegacyAndFrontedEndLayer(1);
 
     nsecs_t time = systemTime();
@@ -1060,6 +1062,7 @@
 }
 
 TEST_F(SmallAreaDetectionTest, smallDirtyLayerWithMatrix) {
+    SET_FLAG_FOR_TEST(flags::enable_small_area_detection, true);
     auto layer = createLegacyAndFrontedEndLayer(1);
 
     nsecs_t time = systemTime();