Prediction of long-term strains, due to creep and shrinkage, is important to ensure adequate safety and serviceability throughout the life of the structure. Mathematical models are developed based on tests done on prismatic elements, which are applicable for columns. The present study investigates the behaviour of RC walls with regard to long-term effects. Further, the applicability of currently popular models, to predict the behaviour of walls is examined. This paper reports the test done on an RC wall panel under sustained load in ambient environment for a period of 8 months. It was observed that the ACI, B4 and CEB-fib MC10 prediction models underestimate the strains in walls, while B3 overestimates. EC2 and GL2000 model predict the final strains in a satisfactory manner. However, the initial trends are overestimated by all prediction models, except ACI. Further, the influence of reinforcement on long-term strains is not included in the prediction models. This study emphasis the need to refine the prediction models to make them applicable for RC walls. © 2018 Czech Technical University in Prague. All rights reserved.