diff --git a/src/Monolog/Formatter/LineFormatter.php b/src/Monolog/Formatter/LineFormatter.php
index 8c671aa9..fd9dc5bb 100644
--- a/src/Monolog/Formatter/LineFormatter.php
+++ b/src/Monolog/Formatter/LineFormatter.php
@@ -204,16 +204,15 @@ class LineFormatter extends NormalizerFormatter
     {
         $str = $this->formatException($e);
 
-        if (($previous = $e->getPrevious()) instanceof \Throwable) {
-            do {
-                $depth++;
-                if ($depth > $this->maxNormalizeDepth) {
-                    $str .= "\n[previous exception] Over " . $this->maxNormalizeDepth . ' levels deep, aborting normalization';
-                    break;
-                }
-
-                $str .= "\n[previous exception] " . $this->formatException($previous);
-            } while ($previous = $previous->getPrevious());
+        $previous = $e->getPrevious();
+        while ($previous instanceof \Throwable) {
+            $depth++;
+            if ($depth > $this->maxNormalizeDepth) {
+                $str .= "\n[previous exception] Over " . $this->maxNormalizeDepth . ' levels deep, aborting normalization';
+                break;
+            }
+            $str .= "\n[previous exception] " . $this->formatException($previous);
+            $previous = $previous->getPrevious();
         }
 
         return $str;
diff --git a/src/Monolog/Handler/Curl/Util.php b/src/Monolog/Handler/Curl/Util.php
index f1028114..6d78cb15 100644
--- a/src/Monolog/Handler/Curl/Util.php
+++ b/src/Monolog/Handler/Curl/Util.php
@@ -37,9 +37,10 @@ final class Util
      * @param  CurlHandle  $ch curl handler
      * @return bool|string @see curl_exec
      */
-    public static function execute(CurlHandle $ch, int $retries = 5, bool $closeAfterDone = true)
+    public static function execute(CurlHandle $ch, int $retries = 5, bool $closeAfterDone = true): bool|string
     {
-        while ($retries--) {
+        while ($retries > 0) {
+            $retries--;
             $curlResponse = curl_exec($ch);
             if ($curlResponse === false) {
                 $curlErrno = curl_errno($ch);
@@ -53,7 +54,6 @@ final class Util
 
                     throw new \RuntimeException(sprintf('Curl error (code %d): %s', $curlErrno, $curlError));
                 }
-
                 continue;
             }
 
@@ -63,7 +63,6 @@ final class Util
 
             return $curlResponse;
         }
-
         return false;
     }
 }