diff --git a/src/Dibi/Drivers/MySqliDriver.php b/src/Dibi/Drivers/MySqliDriver.php
index f90be95e..771f8248 100644
--- a/src/Dibi/Drivers/MySqliDriver.php
+++ b/src/Dibi/Drivers/MySqliDriver.php
@@ -331,7 +331,7 @@ class MySqliDriver implements Dibi\Driver
 
 		} elseif ($limit !== null || $offset) {
 			// see http://dev.mysql.com/doc/refman/5.0/en/select.html
-			$sql .= ' LIMIT ' . ($limit === null ? '18446744073709551615' : $limit)
+			$sql .= ' LIMIT ' . ($limit ?? '18446744073709551615')
 				. ($offset ? ' OFFSET ' . $offset : '');
 		}
 	}
diff --git a/src/Dibi/Drivers/PdoDriver.php b/src/Dibi/Drivers/PdoDriver.php
index f9117a70..d35e1265 100644
--- a/src/Dibi/Drivers/PdoDriver.php
+++ b/src/Dibi/Drivers/PdoDriver.php
@@ -367,7 +367,7 @@ class PdoDriver implements Dibi\Driver
 			case 'mysql':
 				if ($limit !== null || $offset) {
 					// see http://dev.mysql.com/doc/refman/5.0/en/select.html
-					$sql .= ' LIMIT ' . ($limit === null ? '18446744073709551615' : $limit)
+					$sql .= ' LIMIT ' . ($limit ?? '18446744073709551615')
 						. ($offset ? ' OFFSET ' . $offset : '');
 				}
 				break;
@@ -383,7 +383,7 @@ class PdoDriver implements Dibi\Driver
 
 			case 'sqlite':
 				if ($limit !== null || $offset) {
-					$sql .= ' LIMIT ' . ($limit === null ? '-1' : $limit)
+					$sql .= ' LIMIT ' . ($limit ?? '-1')
 						. ($offset ? ' OFFSET ' . $offset : '');
 				}
 				break;
diff --git a/src/Dibi/Drivers/SqliteDriver.php b/src/Dibi/Drivers/SqliteDriver.php
index 55886c5f..db900797 100644
--- a/src/Dibi/Drivers/SqliteDriver.php
+++ b/src/Dibi/Drivers/SqliteDriver.php
@@ -267,7 +267,7 @@ class SqliteDriver implements Dibi\Driver
 			throw new Dibi\NotSupportedException('Negative offset or limit.');
 
 		} elseif ($limit !== null || $offset) {
-			$sql .= ' LIMIT ' . ($limit === null ? '-1' : $limit)
+			$sql .= ' LIMIT ' . ($limit ?? '-1')
 				. ($offset ? ' OFFSET ' . $offset : '');
 		}
 	}