In short, the position, in my humble view, is that once it is possible to make sense out of a ground of appeal that complains both of error in law and misdirection in fact, the ground of appeal is valid, the defect in its form notwithstanding. The rationale behind this lies in the shift in emphasis from technical justice to substantial justice – from form to substance. In other words, though a ground of appeal that complains of an error in law and misdirection in fact may be inelegant in drafting and thereby defective in form, that defect alone is not sufficient to have it struck out provided the complaints therein are clear – see pages 265 – 266 of Aderounmu v. Olowu (supra) per Ayoola JSC.
— Onnoghen JSC. Aigbobahi & Ors. v. Aifuwa, Osabuohien & Ors. (SC. 194/2001, 3 Feb 2006)