diff --git a/packaging/protoBuffers.spec b/packaging/protoBuffers.spec
index 53948b0d2c4d36..6aa681767db5f2 100644
--- a/packaging/protoBuffers.spec
+++ b/packaging/protoBuffers.spec
@@ -22,7 +22,7 @@ rm -rf protobuf-%{version}
 tar -xjvf ~/rpmbuild/SOURCES/protobuf-%{version}.tar.bz2
 cd protobuf-%{version}
 chmod -R a+rX,g-w,o-w .
-export GLOBAL_CPP_FLAGS="-fPIC -m64 -O3 -flto -L/usr/local/probe/lib -L/usr/local/probe/lib64 -Wl,-rpath -Wl,/usr/local/probe/lib64 -Wl,-rpath -Wl,/usr/local/probe/lib "
+export GLOBAL_CPP_FLAGS="-fPIC -m64 -flto -L/usr/local/probe/lib -L/usr/local/probe/lib64 -Wl,-rpath -Wl,/usr/local/probe/lib64 -Wl,-rpath -Wl,/usr/local/probe/lib "
 CPPFLAGS="$CPPFLAGS $GLOBAL_CPP_FLAGS" LDFLAGS=$GLOBAL_CPP_FLAGS ./configure --prefix=/usr/local/probe
 cd ..
 %build