Some mistakes in the paper published in the Journal of Electroanalytical Chemistry 528 (2002) 1 are corrected. The resistance changes of a Pd\H electrode caused by the co-conduction of the electrolyte, the concentration-cell effect and collection of electrolysis current in the in situ resistance measurement using direct currents are calculated analytically. Some advice is given for resistance measurements. (C) 2004 Elsevier B.V. All rights reserved.