diff --git a/varnish.spec b/varnish.spec
index bb05701..6ba36a2 100644
--- a/varnish.spec
+++ b/varnish.spec
@@ -94,8 +94,10 @@ This package holds the development files for varnish.
 %autosetup -p1
 
 %build
+perl -i -lpe 's{-Werror\b}{}' configure.ac
+autoreconf -fi
 %define _lto_cflags %nil
-export CFLAGS="%optflags -fcommon -fstack-protector -Wno-error=clobbered -Werror=maybe-uninitialized"
+export CFLAGS="%optflags -fcommon -fstack-protector"
 %ifarch %ix86
 export CFLAGS="$CFLAGS -ffloat-store -fexcess-precision=standard"
 %endif