A gutter system includes a strap for supporting a screen on the gutter. The strap is an elongate, planar member, preferably formed of the same material as the gutter. A first end of the strap is inserted under the roof shingles, between the keyways. The second end is configured to both project into a channel formed in the distal edge of the gutter and to overlie a horizontal wall of the channel, with a return portion to engagingly retain an edge of the screen.