diff --git a/salt/common/tools/sbin/so-common b/salt/common/tools/sbin/so-common
index b1dd425f8..43fdb8e01 100755
--- a/salt/common/tools/sbin/so-common
+++ b/salt/common/tools/sbin/so-common
@@ -48,6 +48,6 @@ check_container() {
 
 check_password() {
     local password=$1
-    echo "$password" | egrep -v "'|\"|\\\\" > /dev/null 2>&1
+    echo "$password" | egrep -v "'|\"|\\$|\\\\" > /dev/null 2>&1
     return $?
 }
\ No newline at end of file
diff --git a/setup/so-whiptail b/setup/so-whiptail
index 393c2c4af..cc37f0545 100755
--- a/setup/so-whiptail
+++ b/setup/so-whiptail
@@ -384,7 +384,7 @@ whiptail_invalid_pass_characters_warning() {
 
 	[ -n "$TESTING" ] && return
 
-	whiptail --title "Security Onion Setup" --msgbox "Password is invalid. Please exclude single quotes, double quotes and backslashes from the password." 8 75
+	whiptail --title "Security Onion Setup" --msgbox "Password is invalid. Please exclude single quotes, double quotes, dollar signs, and backslashes from the password." 8 75
 }
 
 whiptail_cur_close_days() {