diff --git a/dnsapi/dns_pdns.sh b/dnsapi/dns_pdns.sh
index 6cce54da..2478e19f 100755
--- a/dnsapi/dns_pdns.sh
+++ b/dnsapi/dns_pdns.sh
@@ -20,6 +20,11 @@ dns_pdns_add() {
   fulldomain=$1
   txtvalue=$2
 
+  PDNS_Url="${PDNS_Url:-$(_readaccountconf_mutable PDNS_Url)}"
+  PDNS_ServerId="${PDNS_ServerId:-$(_readaccountconf_mutable PDNS_ServerId)}"
+  PDNS_Token="${PDNS_Token:-$(_readaccountconf_mutable PDNS_Token)}"
+  PDNS_Ttl="${PDNS_Ttl:-$(_readaccountconf_mutable PDNS_Ttl)}"
+
   if [ -z "$PDNS_Url" ]; then
     PDNS_Url=""
     _err "You don't specify PowerDNS address."
@@ -46,12 +51,12 @@ dns_pdns_add() {
   fi
 
   #save the api addr and key to the account conf file.
-  _saveaccountconf PDNS_Url "$PDNS_Url"
-  _saveaccountconf PDNS_ServerId "$PDNS_ServerId"
-  _saveaccountconf PDNS_Token "$PDNS_Token"
+  _saveaccountconf_mutable PDNS_Url "$PDNS_Url"
+  _saveaccountconf_mutable PDNS_ServerId "$PDNS_ServerId"
+  _saveaccountconf_mutable PDNS_Token "$PDNS_Token"
 
   if [ "$PDNS_Ttl" != "$DEFAULT_PDNS_TTL" ]; then
-    _saveaccountconf PDNS_Ttl "$PDNS_Ttl"
+    _saveaccountconf_mutable PDNS_Ttl "$PDNS_Ttl"
   fi
 
   _debug "Detect root zone"
@@ -73,6 +78,11 @@ dns_pdns_rm() {
   fulldomain=$1
   txtvalue=$2
 
+  PDNS_Url="${PDNS_Url:-$(_readaccountconf_mutable PDNS_Url)}"
+  PDNS_ServerId="${PDNS_ServerId:-$(_readaccountconf_mutable PDNS_ServerId)}"
+  PDNS_Token="${PDNS_Token:-$(_readaccountconf_mutable PDNS_Token)}"
+  PDNS_Ttl="${PDNS_Ttl:-$(_readaccountconf_mutable PDNS_Ttl)}"
+
   if [ -z "$PDNS_Ttl" ]; then
     PDNS_Ttl="$DEFAULT_PDNS_TTL"
   fi