diff --git a/lib/lib.Makefile b/lib/lib.Makefile
index 4937809ac..03535169c 100644
--- a/lib/lib.Makefile
+++ b/lib/lib.Makefile
@@ -10,7 +10,8 @@ HAVE_DPKG_PARSECHANGELOG?=$(shell which dpkg-parsechangelog 2>/dev/null)
 ifeq ($(RELEASE_DATE),)
   ifneq ($(HAVE_DPKG_PARSECHANGELOG),)
     RELEASE_DATE=$(shell date -d "@$$(dpkg-parsechangelog -l$(RTPENGINE_ROOT_DIR)/debian/changelog -STimestamp)" '+%F')
-  else
+  endif
+  ifeq ($(RELEASE_DATE),)
     RELEASE_DATE=undefined
   endif
 endif