diff --git a/NEWS b/NEWS
index 0f69970..33bec4b 100644
--- a/NEWS
+++ b/NEWS
@@ -1,4 +1,4 @@
-akgfmaps 3.5.4 (September 18, 2024)
+akgfmaps 3.5.4 (September 23, 2024)
 ----------------------------------------------------------------
 
 BUG FIX
diff --git a/R/make_idw_map.R b/R/make_idw_map.R
index 8291479..d2dcdf0 100644
--- a/R/make_idw_map.R
+++ b/R/make_idw_map.R
@@ -199,11 +199,23 @@ make_idw_map <- function(x = NA,
     vec <- sub("\\,", "–", vec)
     vec <- sub("\\]", "", vec)
 
-    if(length(sig.dig) > 3) {
-
-      sig.dig.format <- trimws(format(sort(sig.dig, decreasing = TRUE), nsmall=0, big.mark=","))
-
-      sig.dig.desc <- trimws(format(sort(sig.dig, decreasing = TRUE)))
+    if(length(sig.dig) > 0) {
+
+      sig.dig.format <- trimws(
+        format(
+          sort(sig.dig,
+               decreasing = TRUE),
+          scientific = FALSE,
+          nsmall=0,
+          big.mark=",")
+      )
+
+      sig.dig.desc <- trimws(
+        format(
+          sort(sig.dig,
+               decreasing = TRUE),
+          scientific = FALSE)
+      )
 
       for(j in 1:length(sig.dig)) {
         vec <- sub(pattern = sig.dig.desc[j], replacement = sig.dig.format[j], x = vec)
diff --git a/R/make_idw_stack.R b/R/make_idw_stack.R
index f1df14c..6ec1b1a 100644
--- a/R/make_idw_stack.R
+++ b/R/make_idw_stack.R
@@ -197,14 +197,28 @@ make_idw_stack <- function(x = NA,
       vec <- sub("\\,", "–", vec)
       vec <- sub("\\]", "", vec)
 
-      if(length(sig.dig) > 3) {
-
-        sig.dig.format <- trimws(format(sort(sig.dig, decreasing = TRUE), nsmall=0, big.mark=","))
-
-        sig.dig.desc <- trimws(format(sort(sig.dig, decreasing = TRUE)))
+      if(length(sig.dig) > 0) {
+
+        sig.dig.format <- trimws(
+          format(
+            sort(sig.dig,
+                 decreasing = TRUE),
+            scientific = FALSE,
+            nsmall=0,
+            big.mark=",")
+        )
+
+        sig.dig.desc <- trimws(
+          format(
+            sort(sig.dig,
+                 decreasing = TRUE),
+            scientific = FALSE)
+        )
 
         for(j in 1:length(sig.dig)) {
-          vec <- sub(pattern = sig.dig.desc[j], replacement = sig.dig.format[j], x = vec)
+          vec <- sub(pattern = sig.dig.desc[j],
+                     replacement = sig.dig.format[j],
+                     x = vec)
         }
       }
       return(vec)