--- a/sh/tmpfiles.sh.in	
+++ a/sh/tmpfiles.sh.in	
@@ -301,11 +301,19 @@ for FILE in $tmpfiles_d ; do
 			*!) [ "$BOOT" -eq "1" ] || continue; cmd=${cmd%!} ;;
 		esac
 
-		# whine about invalid entries
+		# Whine about invalid entries
 		case $cmd in
-			f|F|w|d|D|p|L|c|b|x|X|r|R|z|Z) ;;
-			\#) continue ;;
-			*) warninvalid ; continue ;;
+			f|F|w|d|D|p|L|c|b|x|X|r|R|z|Z)
+				# Valid commands
+				;;
+			\#*)
+				# UNIX-like comments
+				continue
+				;;
+			*)
+				warninvalid
+				continue
+				;;
 		esac
 
 		# fall back on defaults when parameters are passed as '-'