diff --git a/src/Dibi/Connection.php b/src/Dibi/Connection.php
index de23ee6ae..0400f37b1 100644
--- a/src/Dibi/Connection.php
+++ b/src/Dibi/Connection.php
@@ -50,6 +50,10 @@ class Connection implements IConnection
 	 *           empty for decoding as Dibi\DateTime (default)
 	 *           "..." formatted according to given format, see https://www.php.net/manual/en/datetime.format.php
 	 *           "native" for leaving value as is
+	 *       - formatTimeInterval => time-interval format
+	 *           empty for decoding as DateInterval (default)
+	 *           "..." formatted according to given format, see https://www.php.net/manual/en/dateinterval.format.php
+	 *           "native" for leaving value as is
 	 *       - formatJson => json format
 	 *           "array" for decoding json as an array (default)
 	 *           "object" for decoding json as \stdClass
@@ -77,6 +81,7 @@ public function __construct(array $config, string $name = null)
 			Type::DATE => $this->config['result']['formatDate'],
 			Type::DATETIME => $this->config['result']['formatDateTime'],
 			Type::JSON => $this->config['result']['formatJson'] ?? 'array',
+			Type::TIME_INTERVAL => $this->config['result']['formatTimeInterval'] ?? null,
 		];
 
 		// profiler
diff --git a/src/Dibi/Result.php b/src/Dibi/Result.php
index da00b78fb..b066057dd 100644
--- a/src/Dibi/Result.php
+++ b/src/Dibi/Result.php
@@ -498,8 +498,9 @@ private function normalize(array &$row): void
 
 			} elseif ($type === Type::TIME_INTERVAL) {
 				preg_match('#^(-?)(\d+)\D(\d+)\D(\d+)\z#', $value, $m);
-				$row[$key] = new \DateInterval("PT$m[2]H$m[3]M$m[4]S");
-				$row[$key]->invert = (int) (bool) $m[1];
+				$value = new \DateInterval("PT$m[2]H$m[3]M$m[4]S");
+				$value->invert = (int) (bool) $m[1];
+				$row[$key] = $format ? $value->format($format) : $value;
 
 			} elseif ($type === Type::BINARY) {
 				$row[$key] = is_string($value) ? $this->getResultDriver()->unescapeBinary($value) : $value;