diff --git a/sendmail/aliases-lib.pl b/sendmail/aliases-lib.pl
index efb124899..7909d1648 100755
--- a/sendmail/aliases-lib.pl
+++ b/sendmail/aliases-lib.pl
@@ -274,7 +274,7 @@ elsif ($_[0] =~ /^\|(.*)$/) {
 elsif ($_[0] =~ /^(\/.*)$/) {
 	@rv = (3, $1);
 	}
-elsif ($_[0] =~ /^:include:(.*)$/) {
+elsif ($_[0] =~ /^:include:"(.*)"$/ || $_[0] =~ /^:include:(.*)$/) {
 	@rv = (2, $1);
 	}
 else {