diff --git a/debian/rules b/debian/rules
index 08a9b1c..8fb473f 100755
--- a/debian/rules
+++ b/debian/rules
@@ -33,8 +33,8 @@ ifeq ($(DEB_BUILD_ARCH_OS),linux)
 endif
 endif
 
-ifeq (,$(filter nodhcp6,$(DEB_BUILD_OPTIONS)))
-     COPTS += -DHAVE_DHCP6
+ifneq (,$(filter nodhcp6,$(DEB_BUILD_OPTIONS)))
+     COPTS += -DNO_DHCP6
 endif
 
 ifneq (,$(filter noipv6,$(DEB_BUILD_OPTIONS)))