<PAGE>
RULE NO. 424(b)(3)
REGISTRATION NOS. 333-31333 AND
333-78563
ADDENDUM DATED JUNE 1, 1999
to Prospectus Supplement dated May 25, 1999
to Prospectus dated May 21, 1999
$1,100,000,000
GTE Corporation [LOGO]
Floating Rate Debentures Due 2000
We refer you to the first sentence of the last paragraph beginning on page
S-3 of the prospectus supplement. Since May 31, 1999 is not a London business
day, the interest rate in effect for the period from June 2, 1999 to September
2, 1999 will be the three-month LIBOR rate as of 11:00 A.M. on May 28, 1999
minus .081%, which interest rate we have determined to be 4.98525%.
