diff --git a/src/wp-admin/includes/class-wp-importer.php b/src/wp-admin/includes/class-wp-importer.php
index a39fc60cd1ce..aaed2e9d817f 100644
--- a/src/wp-admin/includes/class-wp-importer.php
+++ b/src/wp-admin/includes/class-wp-importer.php
@@ -42,9 +42,6 @@ public function get_imported_posts( $importer_name, $blog_id ) {
 			}
 		} while ( count( $results ) == $limit );
 
-		// Unset to save memory.
-		unset( $results, $r );
-
 		return $hashtable;
 	}
 
@@ -72,9 +69,6 @@ public function count_imported_posts( $importer_name, $blog_id ) {
 			$count = (int) $result[0]->cnt;
 		}
 
-		// Unset to save memory.
-		unset( $results );
-
 		return $count;
 	}
 
@@ -117,9 +111,6 @@ public function get_imported_comments( $blog_id ) {
 			}
 		} while ( count( $results ) == $limit );
 
-		// Unset to save memory.
-		unset( $results, $r );
-
 		return $hashtable;
 	}