--- a/configure.ac
+++ b/configure.ac
@@ -24,7 +24,7 @@
 dnl Add some useful warnings if we have gcc.
 dnl changequote(,)dnl
 if test "x$ac_cv_prog_gcc" = xyes ; then
-  CFLAGS="$CFLAGS -fno-strict-aliasing -Wall -Werror -g -std=gnu99 -Wdeclaration-after-statement -Wno-unused"
+  CFLAGS="$CFLAGS -fno-strict-aliasing -Wall -Wdeclaration-after-statement -Wno-unused"
 fi
 dnl changequote([,])dnl