diff --git a/configure.ac b/configure.ac
index ce3c4d11ca8e7a8772cd7b944a754b38dd6481bf..4253ba485522a5b3557fd87a6035b03ecfc6895b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -22,7 +22,7 @@ AC_INIT([The Glorious Glasgow Haskell Compilation System], [9.10.1], [glasgow-ha
 AC_CONFIG_MACRO_DIRS([m4])
 
 # 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