diff --git a/xsd.spec b/xsd.spec
index 437b328..78aa253 100644
--- a/xsd.spec
+++ b/xsd.spec
@@ -1,6 +1,6 @@
 Name:          xsd
 Version:       4.1.0
-Release:       1mamba
+Release:       2mamba
 Summary:       A W3C XML Schema to C++ translator
 Group:         Development/Tools
 Vendor:        openmamba
@@ -11,7 +11,6 @@ Source:        https://codesynthesis.com/~boris/tmp/xsd/%{version}.a11/xsd-%{ver
 License:       GPL
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
-BuildRequires: libboost-devel
 BuildRequires: libgcc
 BuildRequires: libstdc++6-devel
 BuildRequires: libxerces-c-devel
@@ -38,8 +37,9 @@ This package contains libraries and header files for developing applications tha
 
 %build
 # FIXME: make fixes building examples but we don't care at the time
-make verbose=1 || true<< _EOF
-_EOF
+%make CFLAGS="%{optflags}" CXXFLAGS="%{optflags}" verbose=1
+#|| true<< _EOF
+#_EOF
 
 %install
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
@@ -68,6 +68,9 @@ mv %{buildroot}%{_mandir}/man1/xsd.1 %{buildroot}%{_mandir}/man1/xsdcxx.1
 %doc xsd/NEWS xsd/README
 
 %changelog
+* Sat Apr 03 2021 Silvan Calarco <silvan.calarco@mambasoft.it> 4.1.0-2mamba
+- rebuilt with optflags
+
 * Wed Mar 31 2021 Silvan Calarco <silvan.calarco@mambasoft.it> 4.1.0-1mamba
 - update to 4.1.0