diff --git a/R/CreateRunOptions.R b/R/CreateRunOptions.R
index 4edbdd7184f0b489ebde8c6628bae9eb5a6ab998..dfdedfc73beea590cee2889b4c8449fdfa5476c6 100644
--- a/R/CreateRunOptions.R
+++ b/R/CreateRunOptions.R
@@ -387,10 +387,10 @@ CreateRunOptions <- function(FUN_MOD, InputsModel,
     }
     Factor <- NULL
     if (inherits(InputsModel, "hourly")) {
-      Factor <- 365.25 * 24
+      Factor <- 365.2425 * 24
     }
     if (inherits(InputsModel, "daily")) {
-      Factor <- 365.25
+      Factor <- 365.2425
     }
     if (inherits(InputsModel, "monthly")) {
       Factor <- 12