A House of Commons spokesperson said: "Both divisions proceeded as normal last night, with division bells and the usual audio/visual indications on the hundreds of monitors around the estate.
"The division bells have been tested this morning and are working correctly."
The spokesperson added: "There would have been a lot of activity there around those (meeting) rooms.
"I think it would have been clear that there had been a division on and those involved would have known there was a division on as well."
International Development Secretary Justine Greening claimed she missed the crucial vote on Syria because she did not hear the division bell
Britain's place in the world changed with last night's Commons vote on Syria, as David Cameron spectacularly misread his own party.
It was clear the majority of MPs would not be prepared to back unilateral action by the US and Britain. Today we need to make clear why.