diff --git a/pidd.sh b/pidd.sh
index 94ae8a1..118e6d8 100644
--- a/pidd.sh
+++ b/pidd.sh
@@ -83,7 +83,7 @@ pidd_set_environment_variables() {
         "${PIDD_OS_DEBIAN}"|"${PIDD_OS_UBUNTU}")
             PIDD_OS_VERSION="$(pidd_grep_os VERSION_CODENAME)"
         ;;
-        *)
+        *) ;;
     esac
     # check operating system version
     case "${PIDD_OS_ID}" in
@@ -123,7 +123,7 @@ pidd_set_environment_variables() {
                 *) pidd_error_os "PIDD_OS_VERSION" ;;
             esac
         ;;
-        *)
+        *) ;;
     esac
     pidd_split
     pidd_echo "PIDD_OS_ID" "PIDD_OS_VERSION"
@@ -154,7 +154,7 @@ pidd_set_environment_variables() {
             PIDD_CA_ROOT="/usr/local/share/ca-certificates"
             PIDD_CMD_CA="update-ca-certificates"
         ;;
-        *)
+        *) ;;
     esac
     pidd_split
     pidd_echo "PIDD_CA_ROOT" "PIDD_CMD_CA"
@@ -172,7 +172,7 @@ pidd_set_environment_variables() {
         "${PIDD_OS_ARCH}")
             PIDD_PM="${PIDD_PM_PACMAN}"
         ;;
-        *)
+        *) ;;
     esac
     pidd_split
     pidd_echo "PIDD_PM"
@@ -246,7 +246,7 @@ Dir::Etc::SourceParts \"\";
 Acquire::https::Verify-Peer False;
 "
         ;;
-        *)
+        *) ;;
     esac
     pidd_split
     pidd_echo "PIDD_PM_CLEAN" \
@@ -276,7 +276,7 @@ Acquire::https::Verify-Peer False;
         "${PIDD_OS_UBUNTU}")
             PIDD_URL_DEFAULT="http://archive.ubuntu.com/ubuntu"
         ;;
-        *)
+        *) ;;
     esac
     PIDD_URL_CHOSEN="${PIDD_URL_DEFAULT}"
     case "${PIDD_OS_ID}" in
@@ -305,7 +305,7 @@ Acquire::https::Verify-Peer False;
             [ -n "${PIDD_URL_UBUNTU}" ] && PIDD_URL_CHOSEN="${PIDD_URL_UBUNTU}" \
             || PIDD_URL_CHOSEN="https://ubuntu.mirrors.ovh.net/ubuntu"
         ;;
-        *)
+        *) ;;
     esac
     pidd_split
     pidd_echo "PIDD_URL_DEFAULT" "PIDD_URL_CHOSEN"
@@ -327,7 +327,7 @@ Acquire::https::Verify-Peer False;
             case "${PIDD_OS_VERSION}" in
                 "bookworm") PIDD_PYTHON_COMMAND="python3.11" ;;
                 "bullseye") PIDD_PYTHON_COMMAND="python3.9" ;;
-                *)
+                *) ;;
             esac
             PIDD_PYTHON_PACKAGE="python3"
         ;;
@@ -339,11 +339,11 @@ Acquire::https::Verify-Peer False;
             case "${PIDD_OS_VERSION}" in
                 "noble") PIDD_PYTHON_COMMAND="python3.12" ;;
                 "jammy") PIDD_PYTHON_COMMAND="python3.10" ;;
-                *)
+                *) ;;
             esac
             PIDD_PYTHON_PACKAGE="python3"
         ;;
-        *)
+        *) ;;
     esac
     # set python packages
     case "${PIDD_OS_ID}" in
@@ -356,7 +356,7 @@ Acquire::https::Verify-Peer False;
         "${PIDD_OS_DEBIAN}"|"${PIDD_OS_UBUNTU}")
             PIDD_PYTHON_PACKAGES="/usr/lib/${PIDD_PYTHON_ALIAS}/dist-packages"
         ;;
-        *)
+        *) ;;
     esac
     pidd_split
     pidd_echo "PIDD_PYTHON_COMMAND" "PIDD_PYTHON_PACKAGE" "PIDD_PYTHON_PACKAGES"
@@ -439,7 +439,7 @@ Acquire::https::Verify-Peer False;
         "${PIDD_PM_APK}"|"${PIDD_PM_APT}") PIDD_PKG_SSH="openssh-client" ;;
         "${PIDD_PM_DNF}") PIDD_PKG_SSH="openssh-clients" ;;
         "${PIDD_PM_PACMAN}") PIDD_PKG_SSH="openssh" ;;
-        *)
+        *) ;;
     esac
 }
 
@@ -450,7 +450,7 @@ pidd_set_packages_repositories() {
             case "${PIDD_OS_VERSION}" in
                 "8") pidd_spr__file="/etc/yum.repos.d/almalinux.repo" ;;
                 "9") pidd_spr_file="/etc/yum.repos.d/almalinux-baseos.repo" ;;
-                *)
+                *) ;;
             esac
             pidd_sed "${pidd_spr__file}" \
             "|^mirrorlist|# mirrorlist|" \
@@ -477,7 +477,7 @@ deb ${PIDD_URL_CHOSEN}-security ${PIDD_OS_VERSION}-security main
             case "${PIDD_OS_VERSION}" in
                 "8") pidd_spr__file="/etc/yum.repos.d/Rocky-BaseOS.repo" ;;
                 "9") pidd_spr__file="/etc/yum.repos.d/rocky.repo" ;;
-                *)
+                *) ;;
             esac
             pidd_sed "${pidd_spr__file}" \
             "|^mirrorlist|# mirrorlist|" \
@@ -493,7 +493,7 @@ deb ${PIDD_URL_CHOSEN} ${PIDD_OS_VERSION}-updates main
 deb ${PIDD_URL_CHOSEN} ${PIDD_OS_VERSION}-security main
 "
         ;;
-        *)
+        *) ;;
     esac
 }
 
@@ -504,7 +504,7 @@ pidd_set_packages_configuration() {
         "${PIDD_OS_DEBIAN}"|"${PIDD_OS_UBUNTU}")
             export DEBIAN_FRONTEND="noninteractive"
         ;;
-        *)
+        *) ;;
     esac
 }