diff --git a/DESCRIPTION b/DESCRIPTION
index 22fe42a274e562848c8a7b079352e124534b6374..cb138342046839b95875f6f3162aa27478bbfb8b 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,7 +1,7 @@
 Package: airGR
 Type: Package
 Title: Suite of GR Hydrological Models for Precipitation-Runoff Modelling
-Version: 1.1.2.30
+Version: 1.1.2.31
 Date: 2019-01-18
 Authors@R: c(
   person("Laurent", "Coron", role = c("aut", "trl"), comment = c(ORCID = "0000-0002-1503-6204")),
diff --git a/NEWS.rmd b/NEWS.rmd
index 860e476ae95d2dd968abf1d28b95ed1bb784f7cb..b2c9bad0c372f1632c0cc1f75ab0bd51b00d1578 100644
--- a/NEWS.rmd
+++ b/NEWS.rmd
@@ -13,7 +13,7 @@ output:
 
 
 
-### 1.1.2.30 Release Notes (2019-01-18) 
+### 1.1.2.31 Release Notes (2019-01-18) 
 
 
 
diff --git a/R/CreateRunOptions.R b/R/CreateRunOptions.R
index e04b399f3ad95227da8c47c4b0ef734d5caed67f..cdc6fad0db9f518300faf527a1da1b0bf0e2bfd3 100644
--- a/R/CreateRunOptions.R
+++ b/R/CreateRunOptions.R
@@ -394,8 +394,9 @@ CreateRunOptions <- function(FUN_MOD, InputsModel, IndPeriod_WarmUp = NULL, IndP
     MeanAnSolidPrecip <- rep(mean(SolidPrecip) * Factor, NLayers)
     ### default value: same Gseuil for all layers
     if (warnings) {
-      warning("\t MeanAnSolidPrecip not defined -> it was automatically set to c(",
-              paste(round(MeanAnSolidPrecip), collapse = ","), ") \n")
+      warning("\t 'MeanAnSolidPrecip' not defined -> it was automatically set to c(",
+              paste(round(MeanAnSolidPrecip), collapse = ","), ")  from the 'InputsModel' given to the function. ",
+              "Be careful in case your application is (short-term) forecasting.\n")
     }
   }
   if ("CemaNeige" %in% ObjectClass & !is.null(MeanAnSolidPrecip)) {