diff --git a/CHANGELOG.txt b/CHANGELOG.txt
index deb00daa7c5d58cff859cfd1ee974b8d806f46d2..fc52a8d3a32722c756a8d35d809d48da04104607 100644
--- a/CHANGELOG.txt
+++ b/CHANGELOG.txt
@@ -12,6 +12,7 @@ Features and enhancements
 Let a node migration set node_revisions.uid. Thats the 'last edited by' user
 
 Bug fixes
+- #1050348 - Check map table existence in correct DB.
 - #1028824 - Errors during registry rebuild trigger fatal error.
 Fix highwater handling to deal with duplicate values.
 - #990640 - Help people trying to upgrade from Migrate V1.
diff --git a/plugins/sources/sqlmap.inc b/plugins/sources/sqlmap.inc
index 025fe04f5f75247a9c7e97ced08c8b91e4172e68..c49d71f8473a35da474e32ba677212062b3ac5c7 100644
--- a/plugins/sources/sqlmap.inc
+++ b/plugins/sources/sqlmap.inc
@@ -76,7 +76,7 @@ class MigrateSQLMap extends MigrateMap {
    */
   protected function ensureTables() {
     if (!$this->ensured) {
-      if (!dbtng_table_exists($this->mapTable)) {
+      if (!$this->connection->schema()->tableExists($this->mapTable)) {
         // Generate appropriate schema info for the map and message tables,
         // and map from the source field names to the map/msg field names
         $count = 1;