diff --git a/configure.in b/configure.in
index 7d4ef22d2145..3994f0d7920d 100644
--- a/configure.in
+++ b/configure.in
@@ -1246,6 +1246,7 @@ widget/src/Makefile
 widget/src/build/Makefile
 widget/src/motif/Makefile
 widget/src/rhapsody/Makefile
+widget/src/gtk/Makefile
 widget/src/xpwidgets/Makefile
 widget/tests/Makefile
 widget/tests/scribble/Makefile