diff --git a/install.sh b/install.sh
index 6204377..ec1f3b1 100755
--- a/install.sh
+++ b/install.sh
@@ -100,9 +100,9 @@ apt-get -y install openjdk-8-jdk
 
 # install friendlyelec-toolchain
 [ -d fa-toolchain ] || git clone https://github.com/friendlyarm/prebuilts.git -b master --depth 1 fa-toolchain
-cat fa-toolchain/gcc-x64/toolchain-4.9.3-armhf.tar.gz* | tar xz -C /
-cat fa-toolchain/gcc-x64/toolchain-6.4-aarch64.tar.gz* | tar xz -C /
-tar xf fa-toolchain/gcc-x64/toolchain-11.3-aarch64.tar.xz -C /
+(cat fa-toolchain/gcc-x64/toolchain-4.9.3-armhf.tar.gz* | tar xz -C /)
+(cat fa-toolchain/gcc-x64/toolchain-6.4-aarch64.tar.gz* | tar xz -C /)
+(tar xf fa-toolchain/gcc-x64/toolchain-11.3-aarch64.tar.xz -C /)
 
 rm -rf fa-toolchain