diff --git a/ecc/conversion_toolset_v1/gen_eccdata.sh b/ecc/conversion_toolset_v1/gen_eccdata.sh
index 803f39b..9fc0efc 100644
--- a/ecc/conversion_toolset_v1/gen_eccdata.sh
+++ b/ecc/conversion_toolset_v1/gen_eccdata.sh
@@ -19,8 +19,7 @@
 source "${LOCAL_TOOLSET_DIR}/env.sh"
 
 echo "Converting eccdata..."
-${ANDROID_BUILD_TOP}/prebuilts/misc/${KERNEL}-x86/protobuf/aprotoc \
-  --encode=ecc.AllInfo proto/protobuf_ecc_data.proto \
+aprotoc --encode=ecc.AllInfo proto/protobuf_ecc_data.proto \
   < "${INPUT_DATA}" > "${RAW_DATA}"
 
 echo "Compressing eccdata..."
diff --git a/ecc/gen_eccdata.sh b/ecc/gen_eccdata.sh
index 4c1f616..2888585 100755
--- a/ecc/gen_eccdata.sh
+++ b/ecc/gen_eccdata.sh
@@ -20,24 +20,8 @@
   exit 1
 fi
 
-case $(uname -s) in
-  Darwin)
-    KERNEL=darwin
-    ;;
-  Linux)
-    KERNEL=linux
-    ;;
-  *)
-    echo "Unknown kernel \"`uname -s`\"" 1>&2
-    exit 1
-    ;;
-esac
-
-read -d "" PROTOC_COMMAND << END || :
-${ANDROID_BUILD_TOP}/prebuilts/misc/${KERNEL}-x86/protobuf/aprotoc
-END
-if ! [ -x "${PROTOC_COMMAND}" ] ; then
-  echo "Missing ${PROTOC_COMMAND}." 1>&2
+if ! [ -x "$(which aprotoc)" ] ; then
+  echo "Missing aprotoc, build it with 'm aprotoc'." 1>&2
   exit 1
 fi