Sturges' rule for determining the number of bins in a histogram is commonly used, but its theoretical derivation is flawed. The author argues that Sturges implicitly assumed data was normally distributed when deriving the rule, but the rule does not necessarily hold for non-normal data. Alternative methods for determining the number of bins, such as Scott's rule or Freedman and Diaconis' rule, are better justified statistically and should be preferred over Sturges' rule.