diff --git a/build_scripts/appimage/appimage.sh b/build_scripts/appimage/appimage.sh
index 2928b2d64..d61e11fb7 100755
--- a/build_scripts/appimage/appimage.sh
+++ b/build_scripts/appimage/appimage.sh
@@ -3,7 +3,7 @@
 LINUXDEPLOY_URL="https://github.com/linuxdeploy/linuxdeploy/releases/download/continuous/linuxdeploy-x86_64.AppImage"
 PYTHON_VERSION="3.7.13"
 PYTHON_APPIMAGE_URL="https://github.com/niess/python-appimage/releases/download/python3.7/python${PYTHON_VERSION}-cp37-cp37m-manylinux1_x86_64.AppImage"
-APPIMAGE_DIR="$(realpath $(dirname $BASH_SOURCE[0]))"
+APPIMAGE_DIR=$(realpath "$(dirname "$BASH_SOURCE[0]")")
 APPDIR="$APPIMAGE_DIR/squashfs-root"
 BUILD_DIR="$APPDIR/usr/src"
 
@@ -30,7 +30,7 @@ setup_build_dir() {
   local deployment_type=$3
   local is_release_build=$4
 
-  pushd $APPIMAGE_DIR || handle_error
+  pushd "$APPIMAGE_DIR" || handle_error
 
   setup_python_37_appdir
 
@@ -115,7 +115,7 @@ build_package() {
       --output appimage
 
   dst_name="InfectionMonkey-$version.AppImage"
-  move_package_to_dist_dir $dist_dir $dst_name
+  move_package_to_dist_dir "$dist_dir" "$dst_name"
 
   popd || handle_error
 }