diff --git a/contrib/install.sh b/contrib/install.sh
index b8c8315ab5..981263b2d3 100755
--- a/contrib/install.sh
+++ b/contrib/install.sh
@@ -73,11 +73,11 @@ root_command() {
               SUPPORTED=false
           fi
           ;;
-      "Debian GNU/Linux" | Raspbian)
+      "Debian GNU/Linux" | "debian gnu/linux" | Raspbian)
           if [[ $VER != "11" ]]; then
               SUPPORTED=false
           fi
-          OS=Debian
+          DIST_OS=debian
           ;;
       *)
           echo "### Distribution not supported"
diff --git a/contrib/installer/src/root_command.sh b/contrib/installer/src/root_command.sh
index 0be18a0062..7c260c0c37 100644
--- a/contrib/installer/src/root_command.sh
+++ b/contrib/installer/src/root_command.sh
@@ -63,11 +63,11 @@ case "$OS" in
             SUPPORTED=false
         fi
         ;;
-    "Debian GNU/Linux" | Raspbian)
+    "Debian GNU/Linux" | "debian gnu/linux" | Raspbian)
         if [[ $VER != "11" ]]; then
             SUPPORTED=false
         fi
-        OS=Debian
+        DIST_OS=debian
         ;;
     *)
         echo "### Distribution not supported"