diff --git a/coin-or-CoinUtils.spec b/coin-or-CoinUtils.spec
index 185a2c4..7059e50 100644
--- a/coin-or-CoinUtils.spec
+++ b/coin-or-CoinUtils.spec
@@ -64,8 +64,6 @@ This package contains the documentation for %{name}.
 %patch3 -p1
 
 %build
-export CFLAGS="%{optflags} -Werror=format-security"
-export CXXFLAGS="$CFLAGS"
 %configure
 make %{?_smp_flags} all doxydoc