diff --git a/app/Cfnpp/Functions.php b/app/Cfnpp/Functions.php
index 3ca96e8..59aa9bf 100644
--- a/app/Cfnpp/Functions.php
+++ b/app/Cfnpp/Functions.php
@@ -197,7 +197,10 @@ class Functions
 		$n_if = new Node($n_orig, 'Fn::If');
 		$n_if->addChild(new NodeValue($n_if, null, $condition_name));
 		$n_if->addChild($if_true);
-		$n_if->addChild($if_false);
+		if (isset($if_false))
+		{
+			$n_if->addChild($if_false);
+		}
 		return $n_if;
 	}