diff --git a/DESCRIPTION b/DESCRIPTION
index 2545aa672ed4c2fbe7a609526602845e4ba28b0c..8dc4593f71fe3315ba20a07c8c0e65f69dd8c4e2 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,7 +1,7 @@
 Package: airGR
 Type: Package
 Title: Suite of GR Hydrological Models for Precipitation-Runoff Modelling
-Version: 1.1.2.11
+Version: 1.1.2.12
 Date: 2018-10-22
 Authors@R: c(
   person("Laurent", "Coron", role = c("aut", "trl"), comment = c(ORCID = "0000-0002-1503-6204")),
diff --git a/R/ErrorCrit_RMSE.R b/R/ErrorCrit_RMSE.R
index 201a119763b4f188a388e2042fa32a7573c49881..fb35521b4900852f748c3a58df3125c34d40827b 100644
--- a/R/ErrorCrit_RMSE.R
+++ b/R/ErrorCrit_RMSE.R
@@ -131,6 +131,8 @@ ErrorCrit_RMSE <- function(InputsCrit, OutputsModel, warnings = TRUE, verbose =
                         Multiplier      = Multiplier,
                         Ind_notcomputed = Ind_TS_ignore
     )
+    
+    class(OutputsCrit) <- c("RMSE", "ErrorCrit")
     return(OutputsCrit)
     
   }