diff --git a/lib/get_GPU_GROUP.sh b/lib/get_GPU_GROUP.sh
index c5f017d..bd8bebc 100755
--- a/lib/get_GPU_GROUP.sh
+++ b/lib/get_GPU_GROUP.sh
@@ -24,32 +24,32 @@ To use any of these devices for passthrough ALL of them has to be passed through
 
 To return to the previous page just press ENTER without typing in anything.
 "
-    read -p "Do you want to use these devices for passthrough? [y/N]: " YESNO
+    read -r -p "Do you want to use these devices for passthrough? [y/N]: " YESNO
 
     case "${YESNO}" in
         [Yy]*)
             # Get the hardware ids from the selected group
             local GPU_DEVID
-            GPU_DEVID=$($SCRIPTDIR/utils/ls-iommu | grep -i "group $1" | perl -pe "s/.+\[([0-9a-f]{4}:[0-9a-f]{4})\].+/\1/" | perl -pe "s/\n/,/" | perl -pe "s/,$/\n/")
+            GPU_DEVID=$("$SCRIPTDIR/utils/ls-iommu" | grep -i "group $1" | perl -pe "s/.+\[([0-9a-f]{4}:[0-9a-f]{4})\].+/\1/" | perl -pe "s/\n/,/" | perl -pe "s/,$/\n/")
 
             # Get the PCI ids
             local PCI_ID
-            PCI_ID=$($SCRIPTDIR/utils/ls-iommu | grep -i "group $1" | cut -d " " -f 4 | perl -pe "s/([0-9a-f]{2}:[0-9a-f]{2}.[0-9a-f]{1})\n/\"\1\" /" | perl -pe "s/\s$//")
+            PCI_ID=$("$SCRIPTDIR/utils/ls-iommu" | grep -i "group $1" | cut -d " " -f 4 | perl -pe "s/([0-9a-f]{2}:[0-9a-f]{2}.[0-9a-f]{1})\n/\"\1\" /" | perl -pe "s/\s$//")
 
             # Write the GPU_PCI_IDs to the config that quickemu might make use of in the future
-            printf "GPU_PCI_ID=($PCI_ID)
+            echo "GPU_PCI_ID=($PCI_ID)
 USB_CTL_ID=()
 " > "$SCRIPTDIR/$QUICKEMU/qemu-vfio_vars.conf"
 
             # Get the rom PCI_ID
             local ROM_PCI_ID
-            ROM_PCI_ID=$($SCRIPTDIR/utils/ls-iommu | grep -i "vga" | grep -i "group $1" | cut -d " " -f 4)
+            ROM_PCI_ID=$("$SCRIPTDIR/utils/ls-iommu" | grep -i "vga" | grep -i "group $1" | cut -d " " -f 4)
 
             # Get the GPU ROM
             "$SCRIPTDIR/lib/get_GPU_ROM.sh" "$ROM_PCI_ID"
 
             # Start setting up modules
-            exec "$SCRIPTDIR/lib/set_INITRAMFSTOOLS.sh" $GPU_DEVID
+            exec "$SCRIPTDIR/lib/set_INITRAMFSTOOLS.sh" "$GPU_DEVID"
         ;;
         *)
             exec "$SCRIPTDIR/lib/get_GPU.sh"
@@ -60,7 +60,7 @@ USB_CTL_ID=()
 function main () {
     SCRIPTDIR=$(dirname "$(which $0)" | perl -pe "s/\/\.\.\/lib//" | perl -pe "s/\/lib$//")
 
-    get_GROUP $1
+    get_GROUP "$1"
 }
 
-main $1
+main "$1"