diff --git a/src/Psalm/Checker/StatementsChecker.php b/src/Psalm/Checker/StatementsChecker.php
index 2da11b23092..a6859fbba4c 100644
--- a/src/Psalm/Checker/StatementsChecker.php
+++ b/src/Psalm/Checker/StatementsChecker.php
@@ -271,7 +271,7 @@ public function check(array $stmts, Context $context, Context $loop_context = nu
                             $expr->inferredType,
                             Type::getString(),
                             'echo',
-                            $i,
+                            (int)$i,
                             new CodeLocation($this->getSource(), $expr)
                         ) === false) {
                             return false;