diff --git a/build_tools/make_macos_pkg.sh b/build_tools/make_macos_pkg.sh
index bf29dcc40..a6eabdaed 100755
--- a/build_tools/make_macos_pkg.sh
+++ b/build_tools/make_macos_pkg.sh
@@ -25,7 +25,7 @@ NOTARIZE=
 
 ARM64_DEPLOY_TARGET='MACOSX_DEPLOYMENT_TARGET=11.0'
 X86_64_DEPLOY_TARGET='MACOSX_DEPLOYMENT_TARGET=10.12'
-cmake_args=
+cmake_args=()
 
 while getopts "c:sf:i:p:e:nj:" opt; do
     case $opt in