diff --git a/Makefile b/Makefile
index 0354ed23ee7454c13a7b73fc2fd5302d2c8e4461..d2524bfebccf17676a6b1da43827c5b2da645fcb 100644
--- a/Makefile
+++ b/Makefile
@@ -35,8 +35,8 @@ ${TARGET}: guile-gumbo.o
 install: all
 	mkdir -p $(DESTDIR)$(GUILE_SITE_DIR)
 	mkdir -p $(DESTDIR)$(GUILE_CCACHE_DIR)
-	cp -a --no-preserve=ownership scm $(DESTDIR)$(GUILE_SITE_DIR)
-	cp -a --no-preserve=ownership ccache $(DESTDIR)$(GUILE_CCACHE_DIR)
+	cp -ra --no-preserve=ownership scm/* $(DESTDIR)$(GUILE_SITE_DIR)
+	cp -ra --no-preserve=ownership ccache/* $(DESTDIR)$(GUILE_CCACHE_DIR)
 	install -Dt ${DESTDIR}/usr/lib/ libguile-gumbo.so
 
 check: all