diff --git a/README.md b/README.md
index 50dbc32..6fddd08 100644
--- a/README.md
+++ b/README.md
@@ -63,7 +63,7 @@ The package contains the following files:
 - `misc.py` 				: Contains several miscellaneous functions, e.g. to quickly calculate the refractive index.
 - `refractionModels.py`		 		: Contains various atmospheric models that can be used to calculate the atmospheric refraction
 - `refractivityModels.py` 		: Contains various functions from literature to calculate the refractive index. Some examples of works included are Ciddor (1996), Barrell & Sears (1939), SLALIB, Owens (1967) and Edlen (1966).
-- `observatories` 				: Contains a dictionary with the average atmospheric conditions for various large observatories around the world.
+- `observatories.py` 				: Contains a dictionary with the average atmospheric conditions for various large observatories around the world.