diff --git a/scripts/install-obsw-yocto.sh b/scripts/install-obsw-yocto.sh
index c27b67aa..059d7244 100755
--- a/scripts/install-obsw-yocto.sh
+++ b/scripts/install-obsw-yocto.sh
@@ -2,8 +2,8 @@
 # This is a helper script to install the compiles EIVE OBSW files
 # into the yocto repository to re-generate the mission root filesystem
 build_dir=cmake-build-release-q7s
-if [ !-z ${1} ]; then
-  if [ ${1} == "em" ]; then
+if [ ! -z ${1} ]; then
+  if [[ "${1}" == "em" ]]; then
     echo "-I- Installing EM binaries"
     build_dir=cmake-build-release-q7s-em
   fi