The recent comment paper by Wollgarten and Urban in 1993 criticizing an early paper of Dai in 1992 is considered. It is concluded that, not only the result from the early paper (|b∥| = 0·307±0·03 nm) is correct, but also the simplificationg∥·b∥≊nis reliable when estimating the modulus |b∥| of the Burgers vector of quasicrystalline dislocations in real space byusingg∥·b∥=nin convergent-beam electron diffraction, although the Burgers vector ᵬ of dislocations in the Al–Cu–Fe icosahedral phase should be better characterized in six-dimensional space: ᵬ = ⟨0 – 110 – 11⟩.