diff --git a/R/PlotCombinedMap.R b/R/PlotCombinedMap.R
index d7d5f49e6e5de173e81573cbb8c0a4be1adef8e1..8e27f21f96ad058477504f9bc965a5e509454ad5 100644
--- a/R/PlotCombinedMap.R
+++ b/R/PlotCombinedMap.R
@@ -359,11 +359,12 @@ PlotCombinedMap <- function(maps, lon, lat,
   } else {
 
     brks_norm <- vector('list', length = nmap)
-    range_width <- display_range[2] - display_range[1] #vector('list', length = nmap)
+    range_width <- vector('list', length = nmap)
     slightly_tune_val <- vector('list', length = nmap)
     for (ii in 1:nmap) {
       brks_norm[[ii]] <- seq(0, 1, length.out = length(colorbar$brks[[ii]]))
       slightly_tune_val[[ii]] <- brks_norm[[ii]][2] / (length(brks_norm[[ii]]) * 2)
+      range_width[[ii]] <- diff(range(colorbar$brks[[ii]]))
     }
     ml_map <- apply(maps, c(lat_dim, lon_dim), function(x) {
       if (any(is.na(x))) {
@@ -371,15 +372,16 @@ PlotCombinedMap <- function(maps, lon, lat,
       } else {
         res <- which(x == map_select_fun(x))
         if (length(res) > 0) {
-          res <- res[1]
+          res <- res_ind <- res[1]
           if (map_select_fun(x) < display_range[1] ||
             map_select_fun(x) > display_range[2]) {
             res <- -0.5
           } else {
-            res <- res + (map_select_fun(x) - display_range[1]) / range_width
-            if (map_select_fun(x) == display_range[1]) {
-              res <- res + slightly_tune_val
-            }
+              res <- res + ((map_select_fun(x) - colorbar$brks[[res_ind]][1]) /
+                range_width[[res_ind]]) 
+              if (map_select_fun(x) == colorbar$brks[[res_ind]][1]) {
+                res <- res + slightly_tune_val[[res_ind]]
+              }
           }
         } else {
           res <- -0.5