--- gtkdoc-scan.in.orig	2009-01-08 23:27:06.000000000 +0100
+++ gtkdoc-scan.in	2009-01-09 00:05:18.000000000 +0100
@@ -661,6 +661,7 @@
 	if ($list =~ s/^\S+_IS_${class}_CLASS\n//m)  { $standard_decl .= $&; }
 	if ($list =~ s/^\S+_${class}_GET_CLASS\n//m) { $standard_decl .= $&; }
 	if ($list =~ s/^\S+_${class}_GET_IFACE\n//m) { $standard_decl .= $&; }
+	if ($list =~ s/^\S+_${class}_GET_INTERFACE\n//m) { $standard_decl .= $&; }
 
 	# We do this one last, otherwise it tends to be caught by the IS_$class macro
 	if ($list =~ s/^\S+_$class\n//m)             { $standard_decl = $& . $standard_decl; }
