diff --git a/files/debian/debian-essentials.sh b/files/debian/debian-essentials.sh
index 74cb0bb..b302380 100755
--- a/files/debian/debian-essentials.sh
+++ b/files/debian/debian-essentials.sh
@@ -9,22 +9,24 @@ if [[ ! -f /etc/apt/apt.conf.d/local ]] ; then
 fi
 
 # update bookworm to new debian.sources file
-isInFile=$(cat /etc/apt/sources.list | grep -c "bookworm")
-if [ $isInFile -ne 1 ]; then
-        mkdir /etc/apt/mirrors > /dev/null 2>&1
-        echo "https://deb.debian.org/debian" >> /etc/apt/mirrors/debian.list
-        echo "https://deb.debian.org/debian-security" >> /etc/apt/mirrors/debian-security.list
-        echo "Types: deb deb-src" >> /etc/apt/sources.list.d/debian.sources
-        echo "URIs: mirror+file:///etc/apt/mirrors/debian.list" >> /etc/apt/sources.list.d/debian.sources
-        echo "Suites: bookworm bookworm-updates bookworm-backports" >> /etc/apt/sources.list.d/debian.sources
-        echo "Components: main contrib non-free non-free-firmware" >> /etc/apt/sources.list.d/debian.sources
-        echo "" >> /etc/apt/sources.list.d/debian.sources
-        echo "Types: deb deb-src" >> /etc/apt/sources.list.d/debian.sources
-        echo "URIs: mirror+file:///etc/apt/mirrors/debian-security.list" >> /etc/apt/sources.list.d/debian.sources
-        echo "Suites: bookworm-security" >> /etc/apt/sources.list.d/debian.sources
-        echo "Components: main" >> /etc/apt/sources.list.d/debian.sources
-        mv /etc/apt/sources.list /etc/apt/sources.list.bak > /dev/null 2>&1
-        rm /etc/apt/sources.list.11.backup > /dev/null 2>&1
+if [[ -f /etc/apt/sources.list ]] ; then
+    isInFile=$(cat /etc/apt/sources.list | grep -c "bullseye")
+        if [ $isInFile -eq 0 ]; then
+            mkdir /etc/apt/mirrors > /dev/null 2>&1
+            echo "https://deb.debian.org/debian" >> /etc/apt/mirrors/debian.list
+            echo "https://deb.debian.org/debian-security" >> /etc/apt/mirrors/debian-security.list
+            echo "Types: deb deb-src" >> /etc/apt/sources.list.d/debian.sources
+            echo "URIs: mirror+file:///etc/apt/mirrors/debian.list" >> /etc/apt/sources.list.d/debian.sources
+            echo "Suites: bookworm bookworm-updates bookworm-backports" >> /etc/apt/sources.list.d/debian.sources
+            echo "Components: main contrib non-free non-free-firmware" >> /etc/apt/sources.list.d/debian.sources
+            echo "" >> /etc/apt/sources.list.d/debian.sources
+            echo "Types: deb deb-src" >> /etc/apt/sources.list.d/debian.sources
+            echo "URIs: mirror+file:///etc/apt/mirrors/debian-security.list" >> /etc/apt/sources.list.d/debian.sources
+            echo "Suites: bookworm-security" >> /etc/apt/sources.list.d/debian.sources
+            echo "Components: main" >> /etc/apt/sources.list.d/debian.sources
+            mv /etc/apt/sources.list /etc/apt/sources.list.bak > /dev/null 2>&1
+            rm /etc/apt/sources.list.11.backup > /dev/null 2>&1
+        fi
 fi
 
 # update and upgrade
diff --git a/files/debian/debian-sources-update.sh b/files/debian/debian-sources-update.sh
index 0fdfe2a..c0c0469 100644
--- a/files/debian/debian-sources-update.sh
+++ b/files/debian/debian-sources-update.sh
@@ -1,19 +1,21 @@
 #!/bin/bash
 
-isInFile=$(cat /etc/apt/sources.list | grep -c "bookworm")
-if [ $isInFile -ne 0 ]; then
-        mkdir /etc/apt/mirrors > /dev/null 2>&1
-        echo "https://deb.debian.org/debian" >> /etc/apt/mirrors/debian.list
-        echo "https://deb.debian.org/debian-security" >> /etc/apt/mirrors/debian-security.list
-        echo "Types: deb deb-src" >> /etc/apt/sources.list.d/debian.sources
-        echo "URIs: mirror+file:///etc/apt/mirrors/debian.list" >> /etc/apt/sources.list.d/debian.sources
-        echo "Suites: bookworm bookworm-updates bookworm-backports" >> /etc/apt/sources.list.d/debian.sources
-        echo "Components: main contrib non-free non-free-firmware" >> /etc/apt/sources.list.d/debian.sources
-        echo "" >> /etc/apt/sources.list.d/debian.sources
-        echo "Types: deb deb-src" >> /etc/apt/sources.list.d/debian.sources
-        echo "URIs: mirror+file:///etc/apt/mirrors/debian-security.list" >> /etc/apt/sources.list.d/debian.sources
-        echo "Suites: bookworm-security" >> /etc/apt/sources.list.d/debian.sources
-        echo "Components: main" >> /etc/apt/sources.list.d/debian.sources
-        mv /etc/apt/sources.list /etc/apt/sources.list.bak > /dev/null 2>&1
-        rm /etc/apt/sources.list.11.backup > /dev/null 2>&1
+if [[ -f /etc/apt/sources.list ]] ; then
+        isInFile=$(cat /etc/apt/sources.list | grep -c "bullseye")
+                if [ $isInFile -eq 0 ]; then
+                        mkdir /etc/apt/mirrors > /dev/null 2>&1
+                        echo "https://deb.debian.org/debian" >> /etc/apt/mirrors/debian.list
+                        echo "https://deb.debian.org/debian-security" >> /etc/apt/mirrors/debian-security.list
+                        echo "Types: deb deb-src" >> /etc/apt/sources.list.d/debian.sources
+                        echo "URIs: mirror+file:///etc/apt/mirrors/debian.list" >> /etc/apt/sources.list.d/debian.sources
+                        echo "Suites: bookworm bookworm-updates bookworm-backports" >> /etc/apt/sources.list.d/debian.sources
+                        echo "Components: main contrib non-free non-free-firmware" >> /etc/apt/sources.list.d/debian.sources
+                        echo "" >> /etc/apt/sources.list.d/debian.sources
+                        echo "Types: deb deb-src" >> /etc/apt/sources.list.d/debian.sources
+                        echo "URIs: mirror+file:///etc/apt/mirrors/debian-security.list" >> /etc/apt/sources.list.d/debian.sources
+                        echo "Suites: bookworm-security" >> /etc/apt/sources.list.d/debian.sources
+                        echo "Components: main" >> /etc/apt/sources.list.d/debian.sources
+                        mv /etc/apt/sources.list /etc/apt/sources.list.bak > /dev/null 2>&1
+                        rm /etc/apt/sources.list.11.backup > /dev/null 2>&1
+                fi
 fi