diff --git a/man/airGR.Rd b/man/airGR.Rd
index cccf7553fc0b683e96578a3e45e32039dab000dc..2001b335cd8c54031ae2ee95c55e4d1357d9ab58 100644
--- a/man/airGR.Rd
+++ b/man/airGR.Rd
@@ -58,4 +58,4 @@ To learn how to use the functions from the airGR package, it is recommended to f
 
 }
 
-\keyword{package, hydrology, modelling}
+\keyword{hydrology, model, efficiency criterion, calibration, GR4J}