In § 4 of the Letter ``Cumulant Correlators from the APM'' by I. Szapudi and A. S. Szalay (ApJ, 481, L1 ), the indices a and b had been exchanged unintentionally when the measurements of the quantities ra and rb, extracted from the APM survey, were presented. While this is a subtle change, we would like to correct it for the sake of avoiding any potential confusion in the future.Correctly, in Figure 1, the upper curve relates to rb (``star'' amplitude), and the lower curve relates to ra (``snake'' amplitude). The ninth sentence in the fifth paragraph of § 4 should read as follows: ``The filled triangles and squares show the value of q3=1.15 and q4=2.2 calculated from the averaged value of q21=1.15 and from ra=1.15 and rb=5.3, respectively.'' The first sentence in the seventh paragraph of § 4 should read as follows: ``The deprojection using the coefficients in SDES yields Q3=1, Ra=0.8, and Rb=3.7, giving Q4=1.5.'' Finally, unrelated to the above errors, q4=1.96 of Szapudi et al. (1995, hereafter SDES) has been quoted as 2.96 because of a typographical error, although plotted correctly, and a printer's error in equations (1)-(2) and in the subsequent text incorrectly replaced k with k>. None of the conclusions stated in the Letter change.