diff --git a/classes/FixtureBuilder.inc b/classes/FixtureBuilder.inc
index 1bb219a..a7c5653 100644
--- a/classes/FixtureBuilder.inc
+++ b/classes/FixtureBuilder.inc
@@ -84,7 +84,9 @@ class FixtureBuilder {
 	function build() {
 		if (!empty($this->current_object)) {
 			$this->ensure_type($this->current_object['type']);
-			return $this->{"build_{$this->current_object['type']}"}($this->current_object);
+			$result = $this->{"build_{$this->current_object['type']}"}($this->current_object);
+			unset($this->current_object);
+			return $result;
 		}
 	}
 
diff --git a/test/FixtureBuilderTest.php b/test/FixtureBuilderTest.php
index fd94000..1399461 100644
--- a/test/FixtureBuilderTest.php
+++ b/test/FixtureBuilderTest.php
@@ -210,6 +210,8 @@ class FixtureBuilderTest extends PHPUnit_Framework_TestCase {
 					break;
 			}
 		}
+
+		$this->assertTrue(!isset($builder->current_object));
 	}
 
 	function testBuildEmpty() {