diff --git a/src/makefile.dj b/src/makefile.dj
index 517cf20671d341603da06921414fcd3ef60668d4..9e1a2092096fa7fa0992071150d5ed8cf6706fec 100644
--- a/src/makefile.dj
+++ b/src/makefile.dj
@@ -13,6 +13,8 @@ TOPDIR = ..
 include ../packages/DOS/common.dj
 include Makefile.inc
 
+CSOURCES = $(CURL_SOURCES)
+
 ifeq ($(USE_SSL),1)
   EX_LIBS += $(OPENSSL_ROOT)/lib/libssl.a $(OPENSSL_ROOT)/lib/libcrypt.a
 endif