diff --git a/docs/building.md b/docs/building.md
index 59ce3249c925c3759816d31e8d891ad2021fa717..d5bd3cf300f1f564f0c186638b22c4e38aa088d4 100644
--- a/docs/building.md
+++ b/docs/building.md
@@ -28,7 +28,7 @@ cd linux-sgx
 make preparation
 sudo make sdk_install_pkg_no_mitigation
 cd /opt/intel
-sudo sh -c 'echo yes | /linux-sgx/linux/installer/bin/sgx_linux_x64_sdk_*.bin
+sudo sh -c 'echo yes | /linux-sgx/linux/installer/bin/sgx_linux_x64_sdk_*.bin'
 sudo make psw_install_pkg
 sudo cp /linux-sgx/linux/installer/bin/sgx_linux_x64_psw*.bin .
 sudo ./sgx_linux_x64_psw*.bin --no-start-aesm