diff --git a/pi4/build/build-stormux.sh b/pi4/build/build-stormux.sh
index 3825076..9848229 100755
--- a/pi4/build/build-stormux.sh
+++ b/pi4/build/build-stormux.sh
@@ -180,6 +180,7 @@ pacman -Su --needed --noconfirm \
     pipewire-alsa \
     pipewire-jack \
     pipewire-pulse \
+    realtime-privileges \
     rhvoice-voice-bdl \
     rng-tools \
     rsync \
@@ -202,7 +203,7 @@ systemctl enable rngd.service
 echo 'Stormux \r (\l)' > /etc/issue
 echo >> /etc/issue
 # Change the alarm user to be stormux
-usermod -a -g users -G wheel,audio,video,network,brlapi -m -d /home/stormux -l stormux alarm
+usermod -a -g users -G wheel,realtime,audio,video,network,brlapi -m -d /home/stormux -l stormux alarm
 # Grant sudo privileges to the stormux user for package installation.
 echo 'stormux ALL=(ALL) NOPASSWD: ALL' >> /etc/sudoers.d/wheel
 # Set the password for the root user