diff --git a/src/Illuminate/Database/Concerns/ManagesTransactions.php b/src/Illuminate/Database/Concerns/ManagesTransactions.php
index bbefb1e4051b..4d1d2b8efffe 100644
--- a/src/Illuminate/Database/Concerns/ManagesTransactions.php
+++ b/src/Illuminate/Database/Concerns/ManagesTransactions.php
@@ -186,7 +186,7 @@ public function commit()
      */
     protected function handleCommitTransactionException($e, $currentAttempt, $maxAttempts)
     {
-        $this->transactions--;
+        $this->transactions = max(0, $this->transactions - 1);
 
         if ($this->causedByConcurrencyError($e) &&
             $currentAttempt < $maxAttempts) {