diff --git a/Makefile b/Makefile
index ce3f024..4dad345 100644
--- a/Makefile
+++ b/Makefile
@@ -8,7 +8,7 @@ src/copy_DEPEND_DIRS = configure
 
 
 DIRS += src
-src_DEPEND_DIRS = configure
+src_DEPEND_DIRS = configure src/copy
 
 DIRS += test
 test_DEPEND_DIRS = src