diff --git a/modules/Indices/R/compute_nao.R b/modules/Indices/R/compute_nao.R
index 4be27b8932415c9407a1f2df5833e2b45cf60554..5bb76e4edd2a6fa10434e3872ca1bf7da2bb63c1 100644
--- a/modules/Indices/R/compute_nao.R
+++ b/modules/Indices/R/compute_nao.R
@@ -178,9 +178,7 @@ compute_nao <- function(data, recipe, obsproj, plot_ts, plot_sp,
         toptitle <- paste("NAO Index\n",  
                           month.abb[mes],
                           "/", recipe$Analysis$Time$hcst_start, "-",
-                          recipe$Analysis$Time$hcst_end, "\nMethod:",
-                          ifelse(recipe$Analysis$Workflow$Indices$NAO$obsproj,
-                          "Pobs", "Pmod"), "(Doblas-Reyes et al., 2003)")
+                          recipe$Analysis$Time$hcst_end)
         plotfile <- paste0(recipe$Run$output_dir, "/plots/Indices/NAO_",
                            system, "_", recipe$Analysis$Datasets$Reference$name,
                            "_s", recipe$Analysis$Time$sdate, "_ftime",
@@ -197,9 +195,7 @@ compute_nao <- function(data, recipe, obsproj, plot_ts, plot_sp,
         toptitle <- paste("NAO Index\n",  
                           "Lead time", fmonth,
                           " / Start dates", recipe$Analysis$Time$hcst_start, "-",
-                          recipe$Analysis$Time$hcst_end, "\nMethod:",
-                          ifelse(recipe$Analysis$Workflow$Indices$NAO$obsproj,
-                                 "Pobs", "Pmod"), "(Doblas-Reyes et al., 2003)")
+                          recipe$Analysis$Time$hcst_end)
         plotfile <- paste0(recipe$Run$output_dir, "/plots/Indices/NAO_",
                            system, "_", recipe$Analysis$Datasets$Reference$name,
                            "_ftime",
diff --git a/tests/recipes/recipe-seasonal_NAO.yml b/tests/recipes/recipe-seasonal_NAO.yml
index 95d5a86e64be204c57681672a5c2859c10933987..1cccf1771a1f2e31c93b80f7ba446a90010ce49f 100644
--- a/tests/recipes/recipe-seasonal_NAO.yml
+++ b/tests/recipes/recipe-seasonal_NAO.yml
@@ -35,7 +35,7 @@ Analysis:
       cross_validation: no
       save: none
     Indices:
-      NAO: {ftime_avg: no, obsproj: TRUE, save: 'all', plot_ts: TRUE, plot_sp: yes}
+      NAO: {obsproj: TRUE, save: 'all', plot_ts: TRUE, plot_sp: yes}
     Calibration:
       method: raw # Mandatory, str: Calibration method. See docu.
       save: none