diff --git a/dnsapi/dns_fmdns.sh b/dnsapi/dns_fmdns.sh
index bcc2c3e8..08276c8b 100644
--- a/dnsapi/dns_fmdns.sh
+++ b/dnsapi/dns_fmdns.sh
@@ -94,14 +94,14 @@ _fmDnsApi_addRecord() {
   _info "Adding record to zone"
   curData="{\"fmAuthToken\":\"${FMDNS_API_TOKEN}\",\"id\":\"${FMDNS_API_DOMAIN_ID}\",\"action\":\"add\",\"name\":\"${fulldomain}\",\"value\":\"${txtvalue}\",\"type\":\"TXT\",\"ttl\":\"5\",\"reload\":\"yes\"}"
   curResult="$(_post "${curData}" "${FMDNS_API_ENDPOINT}")"
-  _info "API result: '${curResult}'"
+  _info "API $curResult"
   _debug "Calling facileManager API: '${curData}' '${FMDNS_API_ENDPOINT}'"
   _debug "Result of zone add: '$curResult'"
-  if [ "${curResult}" != "Success" ]; then
-    if [ -z "${curResult}" ]; then
+  if ! _contains "$curResult" 'Success'; then
+    if [ -z "$curResult" ]; then
       _err "Empty response"
     else
-      _err "${curResult}"
+      _err "$curResult"
     fi
     return 1
   fi
@@ -113,14 +113,14 @@ _fmDnsApi_removeRecord() {
   _info "Removing record from zone"
   curData="{\"fmAuthToken\":\"${FMDNS_API_TOKEN}\",\"id\":\"${FMDNS_API_DOMAIN_ID}\",\"action\":\"delete\",\"name\":\"${fulldomain}\",\"type\":\"TXT\",\"ttl\":\"5\",\"reload\":\"yes\"}"
   curResult="$(_post "${curData}" "${FMDNS_API_ENDPOINT}")"
-  _info "API result: '${curResult}'"
+  _info "API $curResult"
   _debug "Calling facileManager API: '${curData}' '${FMDNS_API_ENDPOINT}'"
   _debug "Result of zone delete: '$curResult'"
-  if [ "${curResult}" != "Success" ]; then
-    if [ -z "${curResult}" ]; then
+  if ! _contains "$curResult" 'Success'; then
+    if [ -z "$curResult" ]; then
       _err "Empty response"
     else
-      _err "${curResult}"
+      _err "$curResult"
     fi
     return 1
   fi