diff --git a/festival.spec b/festival.spec
index ca779f4..cb56988 100644
--- a/festival.spec
+++ b/festival.spec
@@ -136,7 +136,7 @@ rm festdoc-%{docversion}/speech_tools/doc/tex_stuff.jade
 CFLAGS="$RPM_OPT_FLAGS -O0"
 export CFLAGS
 %endif
-export CFLAGS="$CFLAGS -fno-strict-aliasing"
+export CXXFLAGS="$RPM_OPT_FLAGS -fno-strict-aliasing"
 
 export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:`pwd`/speech_tools/lib:$PATH
 export PATH=`pwd`/bin:$PATH