diff --git a/setup.sh b/setup.sh
index c1a04a4..1e68940 100755
--- a/setup.sh
+++ b/setup.sh
@@ -90,13 +90,13 @@ sudo raspi-config nonint do_ssh 0
 sudo raspi-config nonint do_camera 0
 sudo raspi-config nonint disable_raspi_config_at_boot 0
 
-if [! dpkg -l | grep -q i2c-tools]; then
+if ! dpkg -l | grep -q i2c-tools; then
   sudo apt install -y i2c-tools
 fi
-if [! dpkg -l | grep -q libgpiod-dev]; then
+if ! dpkg -l | grep -q libgpiod-dev; then
   sudo apt install -y i2c-tools
 fi
-if [! dpkg -l | grep -q python3-libgpiod]; then
+if ! dpkg -l | grep -q python3-libgpiod; then
   sudo apt install -y i2c-tools
 fi