(Brent Lewin/Bloomberg News)

It was a simple tweak — just two words.

But with that, Canada just voted to make its national anthem, “O Canada,” gender neutral, delighting liberal lawmakers and frustrating conservatives.

The offending line — “in all thy sons command” — was switched to “in all of us command.”

The Canadian anthem's English lyrics were written by judge and poet Robert Stanley Weir in 1908. His original words did not include the offending line, which was added by Weir after World War I to reference the men who lost their lives in battle.

Shortly after the vote, the bill's proponents celebrated.

“I'm very, very happy,” Sen. Frances Lankin, an Ontario Independent who sponsored the measure, told the CBC. “This may be small, it's about two words, but it's huge. . . . We can now sing it with pride knowing the law will support us in terms of the language. I'm proud to be part of the group that made this happen.”

Sen. Chantal Petitclerc of Quebec told the news outlet she was jealous that the Canadians headed to PyeongChang, South Korea, for the Winter Olympics would get to celebrate with the new version. “I had the privilege to be on the podium many times, and I never had the chance to sing 'in all of us command,' ” Petitclerc, a former Paralympian who has won 14 gold medals, told the CBC. “I can only imagine what they'll feel when they're on the step of that podium. . . . It's an amazing moment.”

Not everyone was quite so excited. Conservative senators fiercely opposed the measure, arguing that Parliament had no business tweaking a century-old song decades after its author died. There were angry, too, that the legislation's supporters used a parliamentary procedure to force a vote before opponents could say their piece.

“Clearly, I'm disappointed,” Sen. Don Plett, a longtime opponent of the measure, told the CBC. “. . . It's been a long fight. I believe the Canadian public wanted a say in our national anthem, just like they had in the great Canadian flag debate. This is an issue for the Canadian public to decide, not just a couple of Independent senators.”

The change has been years in the making. Liberal lawmaker Mauril Bélanger began pushing for the change in 1980. Since then, he's introduced 12 bills to strip the text of its gendered language. All of his efforts failed. Then, after he was diagnosed with ALS in 2015, his project began to gain traction.

Wednesday, the Canadian Senate offered its final approval of the legislation. It will need “formal royal assent” by the governor general before it becomes law, but that is expected to be granted.

It's unclear whether this largely symbolic shift will matter much to most Canadians. “Is this the sort of thing Canadians want their politicians to spend their time and our tax dollars on?” radio host Scott Thompson asked in a column for Global News. “I’m guessing on a list of 20, this is about 20th for most families just trying to make ends meet.”

Correction: An earlier version of this post incorrectly stated that Weir composed “O Canada.” He drafted the song’s English lyrics. Calixa Lavallée composed the music. The original French lyrics were written by Adolphe-Basile Routhier.