diff --git a/tensorflow/lite/micro/tools/make/ext_libs/xtensa.inc b/tensorflow/lite/micro/tools/make/ext_libs/xtensa.inc
index 759633ce1c9..94f0fad4ed0 100644
--- a/tensorflow/lite/micro/tools/make/ext_libs/xtensa.inc
+++ b/tensorflow/lite/micro/tools/make/ext_libs/xtensa.inc
@@ -11,7 +11,6 @@ ifeq ($(TARGET_ARCH), $(findstring $(TARGET_ARCH), "fusion_f1 hifi4"))
 
   PLATFORM_FLAGS = \
     -DNNLIB_V2 \
-    -DXTENSA_NNLIB_MAX_SCRATCH_SIZE=70*1024 \
     -Wno-shadow
 
   CCFLAGS += $(PLATFORM_FLAGS)