diff --git a/src/linux/Packaging.Linux/build.sh b/src/linux/Packaging.Linux/build.sh
index 6672857d2..9db7ad5e3 100755
--- a/src/linux/Packaging.Linux/build.sh
+++ b/src/linux/Packaging.Linux/build.sh
@@ -41,7 +41,7 @@ esac
 done
 
 # Ensure install prefix exists
-if [! -d "$INSTALL_PREFIX" ]; then
+if [ ! -d "$INSTALL_PREFIX" ]; then
     mkdir -p "$INSTALL_PREFIX"
 fi