diff --git a/R/deprecatedFunctions.R b/R/deprecatedFunctions.R
index 44922984666cdd98da731fc6b039812a9ed7a983..d19c35b580fa280298023c295e94642e35142cba 100644
--- a/R/deprecatedFunctions.R
+++ b/R/deprecatedFunctions.R
@@ -7,7 +7,7 @@ getNWISSites<- function(...){
 
 #' @rdname whatNWISdata
 #' @export
-getNWISDataAvailability <- function(siteNumber,service=c("uv","dv","qw")){
+getNWISDataAvailability <- function(siteNumbers,service=c("uv","dv","qw")){
   message("This function is being deprecated. Please use whatNWISdata in the future.")
   whatNWISdata(siteNumber=siteNumber, service=service)
 }