diff --git a/config.project b/config.project
index 926d181..172280a 100644
--- a/config.project
+++ b/config.project
@@ -34,7 +34,7 @@ mb_ccenv_skip_native=
 mb_default_cflags_common="-std=c99 -D_XOPEN_SOURCE=700"
 mb_default_cflags_common="$mb_default_cflags_common -I\$(SOURCE_DIR)/src/internal"
 mb_default_cflags_common="$mb_default_cflags_common -I\$(SOURCE_DIR)/include"
-mb_default_cflags_common="$mb_default_cflags_common -Ibuild"
+mb_default_cflags_common="$mb_default_cflags_common -Ibuild -Ibuild/gen/ir"
 
 mb_default_cflags_debug=
 mb_default_cflags_cmdline=