It’s not every day that the pope changes canon law. Pope Francis did just that in allowing women a larger role during Mass.

The pope said, using a powerful phrase in Catholic thought, that this headline-grabbing change was based on “a doctrinal development” seen in the recent life of the church.

The move — in the wake of a decades-old priest shortage — will grant “non-ordained ministers” the chance to serve as lectors, read scripture, act as eucharistic ministers and, in a crucial symbolic change, wear robes while serving in the sacred space around the altar. The changes, however, will continue to forbid women from being made deacons or ordained priests.

The pope changed canon law to read: “Lay people who have the age and skills determined by decree of the Episcopal Conference, they can be permanently assumed, through the established liturgical rite, to the ministries of lectors and of acolytes; however this contribution does not give them the right to support or to remuneration by the church.”

For the sake of comparison, the law had previously read: “Lay men who possess the age and qualifications established by decree of the conference of bishops can be admitted on a stable basis through the prescribed liturgical rite to the ministries of lector and acolyte.”

In other words, this codifies into the canon the role of women as part of Roman liturgical rite. The announcement, however, caused lots of confusion, especially among many Catholics who have already witnessed women in some of these roles for decades.

The Associated Press headline on the story read, “Pope says women can read at Mass, but still can’t be priests.” That vague language didn’t clarify matters.

In a letter that accompanied the changes, the pontiff said he wanted to bring “stability” and “public recognition” to women already serving during the Mass. Beyond the headline, the AP, in its reporting of the announcement, said that the pope had “amended” church law “to formalize and institutionalize what is common practice in many parts of the world: Women can be installed as lectors, to read Scripture, and serve on the altar as eucharistic ministers. Previously, such roles were officially reserved to men even though exceptions were made.”

The original AP story caused even more confusion when it initially reported that women could read the Gospel during Mass.