diff --git a/inc/external-fetch.php b/inc/external-fetch.php
index 87160e58..c1096136 100644
--- a/inc/external-fetch.php
+++ b/inc/external-fetch.php
@@ -14,7 +14,7 @@ function create_external ( $path,$is_calendar,$is_addressbook )
 {
   global $request;
   if ( ! function_exists ( "curl_init" ) ) {
-    dbg_error_log("external", "external resource cannot be fetched without curl, please install curl");
+    dbg_error_log("ERROR", "external: external resource cannot be fetched without curl, please install PHP curl");
     $request->DoResponse( 503, translate('PHP curl support is required for external binds') );
     return ;
   }
@@ -42,7 +42,7 @@ function create_external ( $path,$is_calendar,$is_addressbook )
 function fetch_external ( $bind_id, $min_age, $ua_string )
 {
   if ( ! function_exists ( "curl_init" ) ) {
-    dbg_error_log("external", "external resource cannot be fetched without curl, please install curl");
+    dbg_error_log("ERROR", "external: external resource cannot be fetched without curl, please install PHP curl");
     $request->DoResponse( 503, translate('PHP curl support is required for external binds') );
     return ;
   }
@@ -114,7 +114,7 @@ function update_external ( $request )
   if ( $c->external_refresh < 1 )
     return ;
   if ( ! function_exists ( "curl_init" ) ) {
-    dbg_error_log("external", "external resource cannot be fetched without curl, please install curl");
+    dbg_error_log("ERROR", "external: external resource cannot be fetched without curl, please install curl");
     return ;
   }
   $sql = 'SELECT bind_id, external_url as url from dav_binding LEFT JOIN collection ON (collection.collection_id=bound_source_id) WHERE dav_binding.dav_name = :dav_name AND ( collection.modified + interval :interval < NOW() OR collection.modified is NULL )';