diff --git a/tensorflow/lite/micro/tools/make/download_and_extract.sh b/tensorflow/lite/micro/tools/make/download_and_extract.sh
index 2248031f6d1..a403019d192 100755
--- a/tensorflow/lite/micro/tools/make/download_and_extract.sh
+++ b/tensorflow/lite/micro/tools/make/download_and_extract.sh
@@ -86,7 +86,7 @@ patch_kissfft() {
 # CIFAR10 test dataset.
 patch_cifar10_dataset() {
   xxd -l 30730 -i ${1}/test_batch.bin ${1}/../../../../examples/image_recognition_experimental/first_10_cifar_images.h
-  sed -i "s/unsigned char/const unsigned char/g" ${1}/../../../../examples/image_recognition_experimental/first_10_cifar_images.h
+  sed -i -E "s/unsigned char/const unsigned char/g" ${1}/../../../../examples/image_recognition_experimental/first_10_cifar_images.h
 }
 
 build_embarc_mli() {