diff --git a/maintenance/checkSwiftContainers.php b/maintenance/checkSwiftContainers.php
index 07e8dcdd..b02dc121 100644
--- a/maintenance/checkSwiftContainers.php
+++ b/maintenance/checkSwiftContainers.php
@@ -174,10 +174,8 @@ private function findUnmatchedContainers( array $containers ): array {
 					$uniqueContainerCounts[$containerName]++;
 
 					if ( !isset( $uniqueWikiCounts[$dbName] ) ) {
-						$uniqueWikiCounts[$dbName] = 0;
+						$uniqueWikiCounts[$dbName] = 1;
 					}
-
-					$uniqueWikiCounts[$dbName]++;
 				}
 			}
 		}