diff --git a/kiauh.sh b/kiauh.sh
index ad54475..35307d2 100755
--- a/kiauh.sh
+++ b/kiauh.sh
@@ -81,6 +81,7 @@ function kiauh_update_dialog() {
   done
 }
 
+check_if_ratos
 check_euid
 init_logfile
 set_globals
diff --git a/scripts/utilities.sh b/scripts/utilities.sh
index ef72b8b..fa2dfe1 100644
--- a/scripts/utilities.sh
+++ b/scripts/utilities.sh
@@ -28,6 +28,21 @@ function check_euid() {
   fi
 }
 
+function check_if_ratos() {
+  if [[ -n $(which ratos) ]]; then
+    echo -e "${red}"
+    top_border
+    echo -e "|        !!! RatOS 2.1 or greater detected !!!          |"
+    echo -e "|                                                       |"
+    echo -e "|        KIAUH does currently not support RatOS.        |"
+    echo -e "| If you have any questions, please ask for help on the |"
+    echo -e "| RatRig Community Discord: https://discord.gg/ratrig   |"
+    bottom_border
+    echo -e "${white}"
+    exit 1
+  fi
+}
+
 #================================================#
 #============= MESSAGE FORMATTING ===============#
 #================================================#