An image forming apparatus has an image forming portion, a fixing portion for fixing the unfixed image at a fixing nip, a first and second guide members configured to guide the recording material to the fixing nip. The first guide member is provided at a position opposed to a surface of the recording material on which the unfixed image is formed and at a center of the fixing portion with respect to a longitudinal direction of the fixing portion, and the second guide member is provided at a position opposed to the surface of the recording material on which the unfixed image is formed and at an end of the fixing portion with respect to the longitudinal direction of the fixing portion, the second guide member being movable relative to the first guide member with respect to a direction perpendicular to a feeding direction of the recoding material.