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The error probability of DPSK signals in Nakagami fading with EGC diversity reception is analyzed. The error rate is expressed as a (L + 1)-fold integral that contains only simple mathematical functions for L channel reception. The multiple integrals are easily evaluated with the Gauss-Legendre quadrature. Numerical values for the error rates of binary, quaternary and octonary DPSK signals are presented for several fading severity levels.