diff --git a/src/Bakery/Upgrade.php b/src/Bakery/Upgrade.php
index 73f754f..4b169e5 100644
--- a/src/Bakery/Upgrade.php
+++ b/src/Bakery/Upgrade.php
@@ -398,7 +398,9 @@ protected function mapOldTableNames($legacyTables)
                 $newName = $this->newPrefix . $baseName;
             }
 
-            $renamedSourceTables[$oldName] = $newName;
+            if ($oldName != $newName) {
+                $renamedSourceTables[$oldName] = $newName;
+            }
         }
 
         return $renamedSourceTables;