diff --git a/Shorewall/Perl/Shorewall/Config.pm b/Shorewall/Perl/Shorewall/Config.pm
index 0b5abdf7a..d2cc0a01f 100644
--- a/Shorewall/Perl/Shorewall/Config.pm
+++ b/Shorewall/Perl/Shorewall/Config.pm
@@ -2193,7 +2193,7 @@ sub read_a_line(;$$$) {
 	    #
 	    # Handle conditionals
 	    #
-	    if ( $currentline =~ /^\s*\?/ ) {
+	    if ( $currentline =~ /^\s*\?(?:IF|ELSE|ENDIF)/ ) {
 		$omitting = process_conditional( $omitting, $currentline, $currentlinenumber );
 		$currentline='';
 		next;