diff --git a/extras/ros-jazzy-gz-harmonic-install.sh b/extras/ros-jazzy-gz-harmonic-install.sh
index 20ba54af..4549212a 100644
--- a/extras/ros-jazzy-gz-harmonic-install.sh
+++ b/extras/ros-jazzy-gz-harmonic-install.sh
@@ -52,13 +52,13 @@ echo "$REPO" | sudo tee /etc/apt/sources.list.d/gazebo-stable.list >/dev/null
 sudo apt update
 
 DIST=jazzy
-GAZ=gz-harmonic
+GAZEBO=gz-harmonic
 
 sudo apt install -y \
-    $GAZ \
     python3-rosdep \
     python3-rosinstall-generator \
     python3-vcstool \
+    $GAZEBO \
     ros-$DIST-desktop-full \
     ros-$DIST-gz-plugin-vendor \
     ros-$DIST-gz-ros2-control \