diff --git a/configure.in b/configure.in
index a4ad1b0..ea31dbb 100644
--- a/configure.in
+++ b/configure.in
@@ -2,7 +2,7 @@
 AC_INIT(libasn1parser/asn1p_y.y)
 AC_CANONICAL_SYSTEM
 AC_PREREQ(2.53)
-AM_INIT_AUTOMAKE(asn1c, 0.8.10)
+AM_INIT_AUTOMAKE(asn1c, 0.8.11)
 
 AC_SUBST(PATH)
 
@@ -45,7 +45,7 @@
 
 AC_ARG_ENABLE(autoconf,
   [  --enable-Werror         abort compilation after any C compiler warning],
-  ADD_CFLAGS="-Werror")
+  ADD_CFLAGS="-Werror -W")
 AC_SUBST(ADD_CFLAGS)
 
 dnl Add these flags if we're using GCC.