diff --git a/services/surfaceflinger/common/FlagManager.cpp b/services/surfaceflinger/common/FlagManager.cpp
index 858f759..5e78426 100644
--- a/services/surfaceflinger/common/FlagManager.cpp
+++ b/services/surfaceflinger/common/FlagManager.cpp
@@ -165,6 +165,7 @@
     DUMP_ACONFIG_FLAG(deprecate_frame_tracker);
     DUMP_ACONFIG_FLAG(skip_invisible_windows_in_input);
     DUMP_ACONFIG_FLAG(begone_bright_hlg);
+    DUMP_ACONFIG_FLAG(window_blur_kawase2);
 
 #undef DUMP_ACONFIG_FLAG
 #undef DUMP_LEGACY_SERVER_FLAG
@@ -264,6 +265,7 @@
 FLAG_MANAGER_ACONFIG_FLAG(deprecate_frame_tracker, "");
 FLAG_MANAGER_ACONFIG_FLAG(skip_invisible_windows_in_input, "");
 FLAG_MANAGER_ACONFIG_FLAG(begone_bright_hlg, "debug.sf.begone_bright_hlg");
+FLAG_MANAGER_ACONFIG_FLAG(window_blur_kawase2, "");
 
 /// Trunk stable server (R/W) flags ///
 FLAG_MANAGER_ACONFIG_FLAG(refresh_rate_overlay_on_external_display, "")
diff --git a/services/surfaceflinger/common/include/common/FlagManager.h b/services/surfaceflinger/common/include/common/FlagManager.h
index 05af721..d8887f5 100644
--- a/services/surfaceflinger/common/include/common/FlagManager.h
+++ b/services/surfaceflinger/common/include/common/FlagManager.h
@@ -103,6 +103,7 @@
     bool skip_invisible_windows_in_input() const;
     bool begone_bright_hlg() const;
     bool luts_api() const;
+    bool window_blur_kawase2() const;
 
 protected:
     // overridden for unit tests