diff --git a/modules/Units/R/transform_units_precipitation.R b/modules/Units/R/transform_units_precipitation.R
index 5cc1e812fd31a8aec507c3cae283707a30c273b8..d0dd7ffd50dfb6f04db35006a06cd61b1d8f43e9 100644
--- a/modules/Units/R/transform_units_precipitation.R
+++ b/modules/Units/R/transform_units_precipitation.R
@@ -96,22 +96,25 @@ transform_units_precipitation <- function(data, original_units, new_units,
 }
 
 
-.days_in_month <- function(x, cal) {
-  if (cal %in% c('gregorian', 'standard', 'proleptic_gregorian')) {
-    N_DAYS_IN_MONTHS <- lubridate:::N_DAYS_IN_MONTHS
-    if (leap_year(year(x))) {
-      N_DAYS_IN_MONTHS[2] <- N_DAYS_IN_MONTHS[2] + 1
-    }
-  } else if (cal %in% c('360', '360_day')) {
-    N_DAYS_IN_MONTHS <- rep(30, 12)
-    names(N_DAYS_IN_MONTHS) <- month.abb
-  } else if (cal %in% c('365', '365_day')) {
-    N_DAYS_IN_MONTHS <- lubridate:::N_DAYS_IN_MONTHS
-  } else {
-    stop("Unknown calendar")
-  } 
-  month_x <- month(x, label = TRUE, locale = "C")
-  n_days <- N_DAYS_IN_MONTHS[month_x]
-  n_days[month_x == "Feb" & leap_year(x)] <- 29L
+.days_in_month <- function(dates, cal) {
+  n_days <- array()
+  for (x in 1:length(dates)) {
+    if (cal %in% c('gregorian', 'standard', 'proleptic_gregorian')) {
+      N_DAYS_IN_MONTHS <- lubridate:::N_DAYS_IN_MONTHS
+      if (leap_year(year(dates[x]))) {
+        N_DAYS_IN_MONTHS[2] <- N_DAYS_IN_MONTHS[2] + 1
+      }
+    } else if (cal %in% c('360', '360_day')) {
+      N_DAYS_IN_MONTHS <- rep(30, 12)
+      names(N_DAYS_IN_MONTHS) <- month.abb
+    } else if (cal %in% c('365', '365_day')) {
+      N_DAYS_IN_MONTHS <- lubridate:::N_DAYS_IN_MONTHS
+    } else {
+      stop("Unknown calendar")
+    } 
+    month_x <- month(dates[x], label = TRUE, locale = "C")
+    n_days[x] <- N_DAYS_IN_MONTHS[month_x]
+    # n_days[month_x == "Feb" & leap_year(x)] <- 29L
+  }
   return(n_days)
 }
diff --git a/recipes/atomic_recipes/recipe_system7c3s-prlr.yml b/recipes/atomic_recipes/recipe_system7c3s-prlr.yml
index 1cba3c97f76f05fddec5aefe294f02207e6459b9..590d4499d07b1761737f4c0d2f89bec2bb5e30c7 100644
--- a/recipes/atomic_recipes/recipe_system7c3s-prlr.yml
+++ b/recipes/atomic_recipes/recipe_system7c3s-prlr.yml
@@ -4,8 +4,9 @@ Description:
 Analysis:
   Horizon: Seasonal
   Variables:
-    name: prlr
+    name: prlr  
     freq: monthly_mean
+    units: mm
   Datasets:
     System:
       name: Meteo-France-System7
@@ -36,7 +37,7 @@ Analysis:
       method: mse_min
       save: 'all'
     Skill:
-      metric: RPS RPSS CRPS CRPSS FRPSS BSS10 BSS90 EnsCorr Corr
+      metric: RPS RPSS CRPS CRPSS FRPSS BSS10 BSS90 EnsCorr
       save: 'all'
     Probabilities:
       percentiles: [[1/3, 2/3], [1/10, 9/10], [1/4, 2/4, 3/4]]