diff --git a/configure.ac b/configure.ac
index 30241a5734b483305bb9efd0b5e6b0ea2b673668..77a22b7e2731e4fdb3cc166c25fcc9d7e3aa616b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -16,7 +16,7 @@ dnl
 AC_INIT([The Glorious Glasgow Haskell Compilation System], [8.4.1], [glasgow-haskell-bugs@haskell.org], [ghc-AC_PACKAGE_VERSION])
 
 # Set this to YES for a released version, otherwise NO
-: ${RELEASE=YES}
+: ${RELEASE=NO}
 
 # The primary version (e.g. 7.5, 7.4.1) is set in the AC_INIT line
 # above.  If this is not a released version, then we will append the