Simeon Oka, Editor-in-Chief Emeritus of the journal Thermal Science request that it is, due to request of the Corresponding author of this paper, necessary to correct Acknowledgement of the paper MARANGONI CONVECTION OF NANOFLUID IN A WAVY TRAPEZOIDAL ENCLOSURE written by Sharifah Nuriza Binti Syed Muhammad Naquib AL’AIDRUSa, Zailan Bin SIRIa*, and Mohd Nashrul Bin Mohd ZUBIRb a Institute of Mathematical Sciences, University Malaya, Kuala Lumpur, Malaysia b Department of Mechanical Engineering, University Malaya, Kuala Lumpur, Malaysia Original scientific paper https://doi.org/10.2298/TSCI21S2339A published in the journal Thermal Science, Vol. 25, Year 2021, Special issue 2, pp. S339-S345 since due to change regulations accepted by Government of Malaysia Condolement should have different and more detailed form. Instead of: ACKNOWLEDGEMENT This paper is part of a research project supported by the Malaysian Ministry of Higher Education Fundamental Research Grant no. FP068-2020. The authors would also like to express their thanks to the University of Malaya for supporting this research under grant no. IIRG006C19IISS. has to be written: Acknowledgment The work is supported financially by the Ministry of Higher Education Malaysia via Fundamental Research Grant Scheme (FRGS/1/2020/STG06/UM/02/4) and Impact Oriented Interdisciplinary Research Grant No. IIRG006C-19IISS. Link to the corrected article 10.2298/TSCI21S2339A