diff --git a/src/SilverStripe/BehatExtension/Context/FixtureContext.php b/src/SilverStripe/BehatExtension/Context/FixtureContext.php
index 36d574e..3584e44 100644
--- a/src/SilverStripe/BehatExtension/Context/FixtureContext.php
+++ b/src/SilverStripe/BehatExtension/Context/FixtureContext.php
@@ -139,7 +139,16 @@ class FixtureContext extends BehatContext
 			$class,
 			array($field => $value)
 		);
-		$this->fixtureFactory->createObject($class, $id, $fields);
+		// We should check if this fixture object already exists - if it does, we update it. If not, we create it
+		if($existingFixture = $this->fixtureFactory->get($class, $id)) {
+			// Merge existing data with new data, and create new object to replace existing object
+			foreach($fields as $k => $v) {
+				$existingFixture->$k = $v;
+			}
+			$existingFixture->write();
+		} else {
+			$this->fixtureFactory->createObject($class, $id, $fields);
+		}
 	}
    
 	/**
@@ -160,7 +169,16 @@ class FixtureContext extends BehatContext
 			array_combine($matches['key'], $matches['value'])
 		);
 		$fields = $this->prepareFixture($class, $id, $fields);
-		$this->fixtureFactory->createObject($class, $id, $fields);
+		// We should check if this fixture object already exists - if it does, we update it. If not, we create it
+		if($existingFixture = $this->fixtureFactory->get($class, $id)) {
+			// Merge existing data with new data, and create new object to replace existing object
+			foreach($fields as $k => $v) {
+				$existingFixture->$k = $v;
+			}
+			$existingFixture->write();
+		} else {
+			$this->fixtureFactory->createObject($class, $id, $fields);
+		}
 	}
 
 	/**