Abstract: In a system and method for correcting horizon line incongruity in a display of an image captured by an endoscope. The system determines an axial rotation of an angled endoscope while the endoscope is capturing video images of a surgical site. The capture images are displayed in real time on an image display, and, more particularly, are displayed as rotated by an equal degree to the amount of axial rotation, and in an opposite direction to the determined axial rotation. This avoids the undesirable shift of the horizon line on the viewer's monitor that typically occurs during axial rotation of an angled scope.