diff --git a/app.config.transform b/app.config.transform
index 055a43c..d4a314a 100644
--- a/app.config.transform
+++ b/app.config.transform
@@ -1,6 +1,6 @@
 <configuration>
   <appSettings>
-    <add key="base_uri" value="https://api.createsend.com/api/v3.1" />
-    <add key="base_oauth_uri" value="https://api.createsend.com/oauth" />
+    <add key="createsend_api_base_uri" value="https://api.createsend.com/api/v3.1" />
+    <add key="createsend_api_base_oauth_uri" value="https://api.createsend.com/oauth" />
   </appSettings>
 </configuration>
\ No newline at end of file
diff --git a/createsend-dotnet/CreateSendOptions.cs b/createsend-dotnet/CreateSendOptions.cs
index b7a2440..8409f58 100644
--- a/createsend-dotnet/CreateSendOptions.cs
+++ b/createsend-dotnet/CreateSendOptions.cs
@@ -11,13 +11,13 @@ public static class CreateSendOptions
         static CreateSendOptions()
         {
             base_uri = string.IsNullOrEmpty(
-                ConfigurationManager.AppSettings["base_uri"]) ?
+                ConfigurationManager.AppSettings["createsend_api_base_uri"]) ?
                 "https://api.createsend.com/api/v3.1" :
-                ConfigurationManager.AppSettings["base_uri"];
+                ConfigurationManager.AppSettings["createsend_api_base_uri"];
             base_oauth_uri = string.IsNullOrEmpty(
-                ConfigurationManager.AppSettings["base_oauth_uri"]) ?
+                ConfigurationManager.AppSettings["createsend_api_base_oauth_uri"]) ?
                 "https://api.createsend.com/oauth" :
-                ConfigurationManager.AppSettings["base_oauth_uri"];
+                ConfigurationManager.AppSettings["createsend_api_base_oauth_uri"];
         }
 
         public static string BaseUri
diff --git a/createsend-dotnet/nuget/content/app.config.transform b/createsend-dotnet/nuget/content/app.config.transform
index 055a43c..d4a314a 100644
--- a/createsend-dotnet/nuget/content/app.config.transform
+++ b/createsend-dotnet/nuget/content/app.config.transform
@@ -1,6 +1,6 @@
 <configuration>
   <appSettings>
-    <add key="base_uri" value="https://api.createsend.com/api/v3.1" />
-    <add key="base_oauth_uri" value="https://api.createsend.com/oauth" />
+    <add key="createsend_api_base_uri" value="https://api.createsend.com/api/v3.1" />
+    <add key="createsend_api_base_oauth_uri" value="https://api.createsend.com/oauth" />
   </appSettings>
 </configuration>
\ No newline at end of file
diff --git a/createsend-dotnet/nuget/content/web.config.transform b/createsend-dotnet/nuget/content/web.config.transform
index 055a43c..d4a314a 100644
--- a/createsend-dotnet/nuget/content/web.config.transform
+++ b/createsend-dotnet/nuget/content/web.config.transform
@@ -1,6 +1,6 @@
 <configuration>
   <appSettings>
-    <add key="base_uri" value="https://api.createsend.com/api/v3.1" />
-    <add key="base_oauth_uri" value="https://api.createsend.com/oauth" />
+    <add key="createsend_api_base_uri" value="https://api.createsend.com/api/v3.1" />
+    <add key="createsend_api_base_oauth_uri" value="https://api.createsend.com/oauth" />
   </appSettings>
 </configuration>
\ No newline at end of file
diff --git a/web.config.transform b/web.config.transform
index 055a43c..d4a314a 100644
--- a/web.config.transform
+++ b/web.config.transform
@@ -1,6 +1,6 @@
 <configuration>
   <appSettings>
-    <add key="base_uri" value="https://api.createsend.com/api/v3.1" />
-    <add key="base_oauth_uri" value="https://api.createsend.com/oauth" />
+    <add key="createsend_api_base_uri" value="https://api.createsend.com/api/v3.1" />
+    <add key="createsend_api_base_oauth_uri" value="https://api.createsend.com/oauth" />
   </appSettings>
 </configuration>
\ No newline at end of file