In the article titled, “Saudi Guidelines on the Diagnosis and Treatment of Pulmonary Hypertension: Pulmonary hypertension due to left heart disease” published in pages S47-S55, Supplimentary issue 1, vol. 9 of Annals of Thoracic Medicine,[1] the affiliation of the first author “Waleed AlHabeeb” is written incorrectly as “Department of Cardiology, King Faisal Specialist Hospital and Research Center, Riyadh” instead it should be written as “Cardiac Sciences Department, King Saud University, Riyadh.”