diff --git a/dot_bashrc.d/executable_09.functions.tmpl b/dot_bashrc.d/executable_09.functions.tmpl
index 4d73794..5b3fba7 100755
--- a/dot_bashrc.d/executable_09.functions.tmpl
+++ b/dot_bashrc.d/executable_09.functions.tmpl
@@ -113,19 +113,27 @@ list-ssh-keys() {
     done
 }
 
-{{- if (or (eq .chezmoi.osRelease.id "debian") (eq .chezmoi.osRelease.id "linuxmint") (eq .chezmoi.osRelease.id "ubuntu")) }}
 # Show version of a Debian package
 debversion() {
-    local pkgname="${1:?packagename required}"
-    dpkg -s $pkgname | grep Version
+    if [ -x dpkg ]; then
+        local pkgname="${1:?packagename required}"
+        dpkg -s $pkgname | grep Version
+    else
+        echo "not a Debian based system!"
+        return 42
+    fi
 }
 
 # Show files of a Debian package
 deblist() {
-    local pkgname="${1:?packagenamme required}"
-    dpkg-query -L $pkgname
+    if [ -x dpkg ]; then
+        local pkgname="${1:?packagenamme required}"
+        dpkg-query -L $pkgname
+    else
+        echo "not a Debian based system!"
+        return 42
+    fi
 }
-{{- end }}
 
 # Run 'top' by a list of processes matching name.
 topby() {