1 files changed, 10 insertions, 2 deletions

diff --git a/mailgun/resource_mailgun_domain.go b/mailgun/resource_mailgun_domain.go
index eaf00fa..988b80c 100644
--- a/mailgun/resource_mailgun_domain.go
+++ b/mailgun/resource_mailgun_domain.go
@@ -205,6 +205,14 @@ func resourceMailgunDomain() *schema.Resource {
         }
 }
 
+func interfaceToStringTab(i interface{}) []string {
+        aInterface := i.([]interface{})
+        aString := make([]string, len(aInterface))
+        for i, v := range aInterface {
+                aString[i] = v.(string)
+        }
+        return aString
+}
 func CreateDomain(d *schema.ResourceData, meta interface{}) error {
         mg := meta.(*mailgun.MailgunImpl)
         ctx, cancel := context.WithTimeout(context.Background(), time.Second*30)
@@ -218,7 +226,7 @@ func CreateDomain(d *schema.ResourceData, meta interface{}) error {
                 Wildcard:           d.Get("wildcard").(bool),
                 ForceDKIMAuthority: d.Get("force_dkim_authority").(bool),
                 DKIMKeySize:        d.Get("dkim_key_size").(int),
-                IPS:                d.Get("ips").([]string),
+                IPS:                interfaceToStringTab(d.Get("ips")),
         })
 
         if err != nil {
@@ -432,7 +440,7 @@ func ReadDomain(d *schema.ResourceData, meta interface{}) error {
         if err != nil {
                 return fmt.Errorf("Error Getting mailgun credentials for %s: Error: %s", d.Id(), err)
         }
-        
+
         credentials := make([]map[string]interface{}, len(credentialsResponse))
         for i, r := range credentialsResponse {
                 credentials[i] = make(map[string]interface{})