diff --git a/source/use_case/asr/usecase.cmake b/source/use_case/asr/usecase.cmake
index 89a131e..50e7e26 100644
--- a/source/use_case/asr/usecase.cmake
+++ b/source/use_case/asr/usecase.cmake
@@ -71,7 +71,7 @@
 
 
 USER_OPTION(${use_case}_ACTIVATION_BUF_SZ "Activation buffer size for the chosen model"
-    0x00400000
+    0x00200000
     STRING)
 
 if (ETHOS_U_NPU_ENABLED)