Senator John F. Kerry said yesterday that he will stop declaring that his first speech on the floor of the US Senate highlighted his support for the Roe v. Wade decision on abortion rights, a recollection he has learned is not true.

The Congressional Record shows that on Jan. 22, 1985, about three weeks after the former lieutenant governor of Massachusetts was sworn in as a senator, Kerry entered a written statement reiterating his support for the Roe v. Wade decision. His first spoken words on the floor were made on Feb. 7, 1985, when Kerry made brief remarks about civil rights. His first speech, which usually is a momentous occasion sometimes marked by applause from fellow senators, did not occur until more than a month later, when Kerry took up the topic of the MX missile. ''Certainly it would've been more precise to have referred to John Kerry's 1985 remarks on Roe as his `first statement as a United States senator' than as his first `speech,' '' said a statement issued yesterday by Kelley Benander, a spokeswoman for his campaign. ''The confusion was just that, confusion, and was unintentional. The record will be corrected, but will always reflect that John Kerry has throughout his 18 years in the Senate vigorously supported a woman's right to choose.''