diff --git a/src/Makefile b/src/Makefile
index de3e6c9..f8447e7 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -505,7 +505,7 @@ duck-extract.o: duck-extract.import.scm
 duck-extract.import.scm: $(DUCK-EXTRACT-SOURCES)
 
 UTIL-BST-SOURCES=util-bst.scm util-tag.import.scm testing.import.scm	\
-	duck.import.scm
+	duck.import.scm racket-kwargs.import.scm
 
 util-bst.o: util-bst.import.scm
 util-bst.import.scm: $(UTIL-BST-SOURCES)