--- a/contrib/brl/bbas/bil/algo/tests/test_include.cxx
+++ b/contrib/brl/bbas/bil/algo/tests/test_include.cxx
@@ -2,6 +2,7 @@
 #include <bil/algo/bil_cedt.h>
 #include <bil/algo/bil_color_conversions.h>
 #include <bil/algo/bil_compass_edge_detector.h>
+#include <bil/algo/bil_debayer_image.h>
 #include <bil/algo/bil_detect_ridges.h>
 #include <bil/algo/bil_edge_indicator.h>
 #include <bil/algo/bil_edt.h>